Android C++ 学习笔记

行稳方能走远2025-12-28 9:20

这里写自定义目录标题

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01th_oop

person.c

c 复制代码 
#include <stdio.h>

int main(int argc, char **argv)
{
	char *zs_name = "zhangsan";
	int zs_age = 10;

	char *ls_name = "lisi";
	int ls_age = 16;

	printf("name = %s, age = %d\n", zs_name, zs_age);
	printf("name = %s, age = %d\n", ls_name, ls_age);
	
	return 0;
}

person2.c

c 复制代码 
#include <stdio.h>

int main(int argc, char **argv)
{
	char *names[] = {"zhangsan", "lisi"};
	char ages[] = {10, 16};
	char *work[] = {"teacher", "doctor"};
	
	int i;

	for (i = 0; i < 2; i++)
	{
		printf("name = %s, age = %d\n", names[i], ages[i]);	
	}
	
	return 0;
}

person3.c

c 复制代码 
#include <stdio.h>

struct person {
	char *name;
	int age;
	char *work;

	void (*printInfo)(struct person *per);
};

void printInfo(struct person *per)
{
	printf("name = %s, age = %d, work = %s\n", per->name, persons[i].age, persons[i].work);	
}
int main(int argc, char **argv)
{
	struct person persons[] = {
		{"zhangsan", 10, "teacher"},
		{"lisi", 16, "doctor"},
	};
	
	
	int i;

	for (i = 0; i < 2; i++)
	{
		printf("name = %s, age = %d, work = %s\n", persons[i].name, persons[i].age, persons[i].work);	
	}
	
	return 0;
}

person4.c

c 复制代码 
#include <stdio.h>

struct person {
	char *name;
	int age;
	char *work;

	void (*printInfo)(struct person *per);
};

void printInfo(struct person *per)
{
	printf("name = %s, age = %d, work = %s\n", per->name, per->age, per->work);	
}
int main(int argc, char **argv)
{
	struct person persons[] = {
		{"zhangsan", 10, "teacher", printInfo},
		{"lisi", 16, "doctor", printInfo},
	};
	
	persons[0].printInfo(&persons[0]);
	persons[1].printInfo(&persons[1]);
	
	return 0;
}

person5.cpp

cpp 复制代码 
#include <stdio.h>

struct person {
	char *name;
	int age;
	char *work;

	void printInfo(void)
	{
		printf("name = %s, age = %d, work = %s\n", name, age, work); 
	}
};

int main(int argc, char **argv)
{
	struct person persons[] = {
		{"zhangsan", 10, "teacher"},
		{"lisi", 16, "doctor"},
	};
	
	persons[0].printInfo();
	persons[1].printInfo();
	
	return 0;
}

person6.cpp

cpp 复制代码 
#include <stdio.h>

class person {
public:
	char *name;
	int age;
	char *work;

	void printInfo(void)
	{
		printf("name = %s, age = %d, work = %s\n", name, age, work); 
	}
};

int main(int argc, char **argv)
{
	struct person persons[] = {
		{"zhangsan", 10, "teacher"},
		{"lisi", 16, "doctor"},
	};
	
	persons[0].printInfo();
	persons[1].printInfo();
	
	return 0;
}

02th_accesscontrol

person.cpp

cpp 复制代码 
#include <stdio.h>

class Person {
private:
	char *name;
	int age;
	char *work;

public:
	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		printf("name = %s, age = %d, work = %s\n", name, age, work); 
	}
};

int main(int argc, char **argv)
{
	Person per;

	//per.name = "zhangsan";
	per.setName("zhangsan");
	per.setAge(200);
	per.printInfo();
	
	return 0;
}

person2.cpp

cpp 复制代码 
#include <stdio.h>

class Person {
private:
	char *name;
	int age;
	char *work;

public:
	void setName(char *name)
	{
		this->name = name;
	}
	int setAge(int age)
	{
		if (age < 0 || age > 150)
		{
			this->age = 0;
			return -1;
		}
		this->age = age;
		return 0;
	}
	void printInfo(void)
	{
		printf("name = %s, age = %d, work = %s\n", name, age, work); 
	}
};

int main(int argc, char **argv)
{
	Person per;

	//per.name = "zhangsan";
	per.setName("zhangsan");
	per.setAge(200);
	per.printInfo();
	
	return 0;
}

03th_ProgramStructure

01th

person.cpp

cpp 复制代码 
#include <stdio.h>

class Person {
private:
	char *name;
	int age;
	char *work;

public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void Person::setName(char *name)
{
	this->name = name;
}

int Person::setAge(int age)
{
	if (age < 0 || age > 150)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Person::printInfo(void)
{
	printf("name = %s, age = %d, work = %s\n", name, age, work); 
}

int main(int argc, char **argv)
{
	Person per;

	//per.name = "zhangsan";
	per.setName("zhangsan");
	per.setAge(200);
	per.printInfo();
	
	return 0;
}

02th

person.h

cpp 复制代码 
#include <stdio.h>

class Person {
private:
	char *name;
	int age;
	char *work;

public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

person.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"

void Person::setName(char *name)
{
	this->name = name;
}

int Person::setAge(int age)
{
	if (age < 0 || age > 150)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Person::printInfo(void)
{
	printf("name = %s, age = %d, work = %s\n", name, age, work); 
}

main.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"

int main(int argc, char **argv)
{
	Person per;

	//per.name = "zhangsan";
	per.setName("zhangsan");
	per.setAge(200);
	per.printInfo();
	
	return 0;
}

Makefile

bash 复制代码 
person: main.o person.o
	g++ -o $@ $^

%.o : %.cpp
	g++ -c -o $@ $<

clean:
	rm -f *.o person

03th

person.h

cpp 复制代码 
#include <stdio.h>

namespace A {

class Person {
private:
	char *name;
	int age;
	char *work;

public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void printVersion(void);
}

person.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"

namespace A {

void Person::setName(char *name)
{
	this->name = name;
}

int Person::setAge(int age)
{
	if (age < 0 || age > 150)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Person::printInfo(void)
{
	printf("name = %s, age = %d, work = %s\n", name, age, work); 
}

void printVersion(void)
{
	printf("Person v1, by weidongshan\n");
}

}

dog.h

cpp 复制代码 
namespace C {

class Dog {
private:
	char *name;
	int age;
public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void printVersion(void);

}

dog.cpp

cpp 复制代码 
#include <stdio.h>
#include "dog.h"

namespace C {

void Dog::setName(char *name)
{
	this->name = name;
}

int Dog::setAge(int age)
{
	if (age < 0 || age > 20)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Dog::printInfo(void)
{
	printf("name = %s, age = %d\n", name, age); 
}

void printVersion(void)
{
	printf("Dog v1, by weidongshan\n");
}

}

main.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"
#include "dog.h"

int main(int argc, char **argv)
{
	A::Person per;
	per.setName("zhangsan");
	per.setAge(16);
	per.printInfo();

	C::Dog dog;
	dog.setName("wangcai");
	dog.setAge(1);
	dog.printInfo();

	A::printVersion();
	C::printVersion();
	return 0;
}

Makefile

bash 复制代码 
person: main.o person.o dog.o
	g++ -o $@ $^

%.o : %.cpp
	g++ -c -o $@ $<

clean:
	rm -f *.o person

04th

person.h

cpp 复制代码 
#include <stdio.h>

namespace A {

class Person {
private:
	char *name;
	int age;
	char *work;

public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void printVersion(void);
}

person.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"

namespace A {

void Person::setName(char *name)
{
	this->name = name;
}

int Person::setAge(int age)
{
	if (age < 0 || age > 150)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Person::printInfo(void)
{
	printf("name = %s, age = %d, work = %s\n", name, age, work); 
}

void printVersion(void)
{
	printf("Person v1, by weidongshan\n");
}

}

dog.h

cpp 复制代码 
namespace C {

class Dog {
private:
	char *name;
	int age;
public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void printVersion(void);

}

dog.cpp

cpp 复制代码 
#include <stdio.h>
#include "dog.h"

namespace C {

void Dog::setName(char *name)
{
	this->name = name;
}

int Dog::setAge(int age)
{
	if (age < 0 || age > 20)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Dog::printInfo(void)
{
	printf("name = %s, age = %d\n", name, age); 
}

void printVersion(void)
{
	printf("Dog v1, by weidongshan\n");
}

}

main.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"
#include "dog.h"

/* global namespace */

/* 把A::Person放入global namespace, 以后可以使用Person来表示A::Person */
using A::Person;

/* 把C::Dog放入global namespace, 以后可以使用Dog来表示C::Dog */
using C::Dog;

using A::printVersion;
using C::printVersion;

int main(int argc, char **argv)
{
	/* local namespace */
	//using A::Person;
	//using C::Dog;

	Person per;
	per.setName("zhangsan");
	per.setAge(16);
	per.printInfo();

	Dog dog;
	dog.setName("wangcai");
	dog.setAge(1);
	dog.printInfo();

	A::printVersion();
	C::printVersion();
	return 0;
}

Makefile

bash 复制代码 
person: main.o person.o dog.o
	g++ -o $@ $^

%.o : %.cpp
	g++ -c -o $@ $<

clean:
	rm -f *.o person

05th

person.h

cpp 复制代码 
#include <stdio.h>

namespace A {

class Person {
private:
	char *name;
	int age;
	char *work;

public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void printVersion(void);
}

person.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"

namespace A {

void Person::setName(char *name)
{
	this->name = name;
}

int Person::setAge(int age)
{
	if (age < 0 || age > 150)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Person::printInfo(void)
{
	printf("name = %s, age = %d, work = %s\n", name, age, work); 
}

void printVersion(void)
{
	printf("Person v1, by weidongshan\n");
}

}

dog.h

cpp 复制代码 
namespace C {

class Dog {
private:
	char *name;
	int age;
public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void printVersion(void);

}

dog.cpp

cpp 复制代码 
#include <stdio.h>
#include "dog.h"

namespace C {

void Dog::setName(char *name)
{
	this->name = name;
}

int Dog::setAge(int age)
{
	if (age < 0 || age > 20)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Dog::printInfo(void)
{
	printf("name = %s, age = %d\n", name, age); 
}

void printVersion(void)
{
	printf("Dog v1, by weidongshan\n");
}

}

main.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"
#include "dog.h"

using namespace A;
using namespace C;

int main(int argc, char **argv)
{
	/* local namespace */
	//using A::Person;
	//using C::Dog;

	Person per;
	per.setName("zhangsan");
	per.setAge(16);
	per.printInfo();

	Dog dog;
	dog.setName("wangcai");
	dog.setAge(1);
	dog.printInfo();

	A::printVersion();
	C::printVersion();
	return 0;
}

Makefile

bash 复制代码 
person: main.o person.o dog.o
	g++ -o $@ $^

%.o : %.cpp
	g++ -c -o $@ $<

clean:
	rm -f *.o person

06th

person.h

cpp 复制代码 
#include <stdio.h>

namespace A {

class Person {
private:
	char *name;
	int age;
	char *work;

public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void printVersion(void);
}

person.cpp

cpp 复制代码 
#include <iostream>
#include "person.h"

namespace A {

void Person::setName(char *name)
{
	this->name = name;
}

int Person::setAge(int age)
{
	if (age < 0 || age > 150)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Person::printInfo(void)
{
	std::cout<<"name = "<<name<<" age = "<<age<<" work = "<<work<<std::endl; 
}

void printVersion(void)
{
	std::cout<<"Person v1, by weidongshan"<<std::endl;
}

}

dog.h

cpp 复制代码 
namespace C {

class Dog {
private:
	char *name;
	int age;
public:
	void setName(char *name);
	int setAge(int age);
	void printInfo(void);
};

void printVersion(void);

}

dog.cpp

cpp 复制代码 
#include <iostream>
#include "dog.h"

namespace C {

using namespace std;

void Dog::setName(char *name)
{
	this->name = name;
}

int Dog::setAge(int age)
{
	if (age < 0 || age > 20)
	{
		this->age = 0;
		return -1;
	}
	this->age = age;
	return 0;
}

void Dog::printInfo(void)
{
	cout<<"name = "<<name<<" age = "<<age<<endl; 
}

void printVersion(void)
{
	cout<<"Dog v1, by weidongshan"<<endl;
}

}

main.cpp

cpp 复制代码 
#include <stdio.h>
#include "person.h"
#include "dog.h"

using namespace A;
using namespace C;

int main(int argc, char **argv)
{
	/* local namespace */
	//using A::Person;
	//using C::Dog;

	Person per;
	per.setName("zhangsan");
	per.setAge(16);
	per.printInfo();

	Dog dog;
	dog.setName("wangcai");
	dog.setAge(1);
	dog.printInfo();

	A::printVersion();
	C::printVersion();
	return 0;
}

Makefile

bash 复制代码 
person: main.o person.o dog.o
	g++ -o $@ $^

%.o : %.cpp
	g++ -c -o $@ $<

clean:
	rm -f *.o person

04th_overload

main.cpp

cpp 复制代码 
#include <iostream>

using namespace std;

int add(int a, int b)
{
	cout<<"add int+int"<<endl;
	return a+b;
}

int add(int a, int b, int c)
{
	cout<<"add int+int+int"<<endl;
	return a+b+c;
}

double add(double a, double b)
{
	cout<<"add double+double"<<endl;
	return a+b;
}

double add(int a, double b)
{
	cout<<"add int+double"<<endl;
	return (double)a+b;
}

double add(double b, int a)
{
	cout<<"add double+int"<<endl;
	return (double)a+b;
}



int main(int argc, char **argv)
{
	add(1, 2);
	add(1, 2, 3);
	add(1.0, 2.0);
	add(1, 2.0);
	add(1.0, 2);

	return 0;
}

05th_pointer_reference

main.cpp

cpp 复制代码 
#include <iostream>

using namespace std;

int add_one(int a)
{
	a = a+1;
	return a;
}

int add_one(int *a)
{
	*a = *a + 1;
	return *a;
}

int add_one_ref(int &b)
{
	b = b+1;
	return b;
}

int main(int argc, char **argv)
{
	int a = 99;
        int &c = a;
	cout<<add_one(a)<<endl;
	cout<<"a = "<<a<<endl;

	cout<<add_one(&a)<<endl;
	cout<<"a = "<<a<<endl;

	cout<<add_one_ref(a)<<endl;
	cout<<"a = "<<a<<endl;

        c++;
        
	cout<<"a = "<<a<<endl;
	cout<<"c = "<<c<<endl;

	return 0;
}

06th_constructor

person.cpp

cpp 复制代码 
#include <iostream>
using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {cout <<"Pserson()"<<endl;}
	Person(char *name) 
	{
		cout <<"Pserson(char *)"<<endl;
		this->name = name;
	}

	Person(char *name, int age) 
	{
		cout <<"Pserson(char*, int)"<<endl;
		this->name = name;
		this->age = age;
	}
	
	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

int main(int argc, char **argv)
{
	Person per("zhangsan", 16);
	Person per2;

	per.printInfo();
	
	return 0;
}

person2.cpp

cpp 复制代码 
#include <iostream>
using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {cout <<"Pserson()"<<endl;}
	Person(char *name) 
	{
		cout <<"Pserson(char *)"<<endl;
		this->name = name;
	}

	Person(char *name, int age, char *work = "none") 
	{
		cout <<"Pserson(char*, int)"<<endl;
		this->name = name;
		this->age = age;
		this->work = work;
	}

	
	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

int main(int argc, char **argv)
{
	Person per("zhangsan", 16);
	Person per2;   /* 调用无参构造函数 */
	Person per3(); /* int fun(); */

	per.printInfo();
	return 0;
}

person3.cpp

cpp 复制代码 
#include <iostream>
using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {cout <<"Pserson()"<<endl;}
	Person(char *name) 
	{
		cout <<"Pserson(char *)"<<endl;
		this->name = name;
	}

	Person(char *name, int age, char *work = "none") 
	{
		cout <<"Pserson(char*, int)"<<endl;
		this->name = name;
		this->age = age;
		this->work = work;
	}

	
	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

int main(int argc, char **argv)
{
	Person per("zhangsan", 16);
	Person per2;   /* 调用无参构造函数 */
	Person per3(); /* int fun(); */

	Person *per4 = new Person;
	Person *per5 = new Person();

	Person *per6 = new Person[2];

	Person *per7 = new Person("lisi", 18, "student");
	Person *per8 = new Person("wangwu", 18);

	per.printInfo();
	per7->printInfo();
	per8->printInfo();

	delete per4;
	delete per5;
	delete []per6;
	delete per7;
	delete per8;

	return 0;
}

person4.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>

using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {cout <<"Pserson()"<<endl;}
	Person(char *name) 
	{
		cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
	}

	Person(char *name, int age, char *work = "none") 
	{
		cout <<"Pserson(char*, int)"<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
	}

	
	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

int main(int argc, char **argv)
{
	Person per("zhangsan", 16);
	Person per2;   /* 调用无参构造函数 */
	Person per3(); /* int fun(); */

	Person *per4 = new Person;
	Person *per5 = new Person();

	Person *per6 = new Person[2];

	Person *per7 = new Person("lisi", 18, "student");
	Person *per8 = new Person("wangwu", 18);

	per.printInfo();
	per7->printInfo();
	per8->printInfo();

	delete per4;
	delete per5;
	delete []per6;
	delete per7;
	delete per8;

	return 0;
}

person5.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
	}

	Person(char *name, int age, char *work = "none") 
	{
		//cout <<"Pserson(char*, int)"<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		//cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

void test_fun()
{
	Person per("zhangsan", 16);
	Person per2;   /* 调用无参构造函数 */
	Person per3(); /* int fun(); */

	Person *per4 = new Person;
	Person *per5 = new Person();

	Person *per6 = new Person[2];

	Person *per7 = new Person("lisi", 18, "student");
	Person *per8 = new Person("wangwu", 18);

	per.printInfo();
	per7->printInfo();
	per8->printInfo();

	delete per4;
	delete per5;
	delete []per6;
	delete per7;
	delete per8;

}

int main(int argc, char **argv)
{
	for (int i = 0; i < 1000000; i++)
		test_fun();
	cout << "run test_fun end"<<endl;
	sleep(10);
	return 0;
}

person6.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
	}

	Person(char *name, int age, char *work = "none") 
	{
		//cout <<"Pserson(char*, int)"<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
	}

	~Person()
	{
		if (this->name)
			delete this->name;
		if (this->work)
			delete this->work;
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		//cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

void test_fun()
{
	Person per("zhangsan", 16);
	Person per2;   /* 调用无参构造函数 */
	Person per3(); /* int fun(); */

	Person *per4 = new Person;
	Person *per5 = new Person();

	Person *per6 = new Person[2];

	Person *per7 = new Person("lisi", 18, "student");
	Person *per8 = new Person("wangwu", 18);

	per.printInfo();
	per7->printInfo();
	per8->printInfo();

	delete per4;
	delete per5;
	delete []per6;
	delete per7;
	delete per8;

}

int main(int argc, char **argv)
{
	for (int i = 0; i < 1000000; i++)
		test_fun();
	cout << "run test_fun end"<<endl;
	sleep(10);
	return 0;
}

person7.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
	}

	Person(char *name, int age, char *work = "none") 
	{
		//cout <<"Pserson(char*, int)"<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
		if (this->work) {
			cout << "work = "<<work<<endl;
			delete this->work;
		}
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		//cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

void test_fun()
{
	Person per("zhangsan", 16);

	Person *per7 = new Person("lisi", 18, "student");
	//delete per7;

}

int main(int argc, char **argv)
{
	test_fun();
	cout << "run test_fun end"<<endl;
	sleep(10);
	return 0;
}

person8.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
	}

	Person(char *name, int age, char *work = "none") 
	{
		//cout <<"Pserson(char*, int)"<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
		if (this->work) {
			cout << "work = "<<work<<endl;
			delete this->work;
		}
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

int main(int argc, char **argv)
{
	Person per("zhangsan", 18);
	Person per2(per);

	per2.printInfo();

	return 0;
}

person9.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
	}

	Person(char *name, int age, char *work = "none") 
	{
		//cout <<"Pserson(char*, int)"<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
	}

	Person(Person &per) 
	{
		cout <<"Pserson(Person &)"<<endl;
		this->age = per.age;

		this->name = new char[strlen(per.name) + 1];
		strcpy(this->name, per.name);

		this->work = new char[strlen(per.work) + 1];
		strcpy(this->work, per.work);
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
		if (this->work) {
			cout << "work = "<<work<<endl;
			delete this->work;
		}
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

int main(int argc, char **argv)
{
	Person per("zhangsan", 18);
	Person per2(per);

	per2.printInfo();

	return 0;
}

person10.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
	}

	Person(char *name, int age, char *work = "none") 
	{
		cout <<"Pserson(char*, int), name = "<<name<<", age= "<<age<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
	}

	Person(Person &per) 
	{
		cout <<"Pserson(Person &)"<<endl;
		this->age = per.age;

		this->name = new char[strlen(per.name) + 1];
		strcpy(this->name, per.name);

		this->work = new char[strlen(per.work) + 1];
		strcpy(this->work, per.work);
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
		if (this->work) {
			cout << "work = "<<work<<endl;
			delete this->work;
		}
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

Person per_g("per_g", 10);

void func()
{
	Person per_func("per_func", 11);
	static Person per_func_s("per_func_s", 11);
}

int main(int argc, char **argv)
{
	Person per_main("per_main", 11);
	static Person per_main_s("per_main_s", 11);

	for (int i = 0; i < 2; i++)
	{
		func();
		Person per_for("per_for", i);
	}

	return 0;
}

person11.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	char *name;
	int age;
	char *work;

public:

	Person() {
		cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
	}

	Person(char *name, int age, char *work = "none") 
	{
		cout <<"Pserson(char*, int), name = "<<name<<", age= "<<age<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
	}

	Person(Person &per) 
	{
		cout <<"Pserson(Person &)"<<endl;
		this->age = per.age;

		this->name = new char[strlen(per.name) + 1];
		strcpy(this->name, per.name);

		this->work = new char[strlen(per.work) + 1];
		strcpy(this->work, per.work);
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
		if (this->work) {
			cout << "work = "<<work<<endl;
			delete this->work;
		}
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

class Student {
private:
	Person father;
	Person mother;
	int student_id;
public:
	Student()
	{
		cout<<"Student()"<<endl;
	}

	Student(int id, char *father, char *mother, int father_age = 40, int mother_age = 39) : mother(mother, mother_age), father(father, father_age)
	{
		cout<<"Student(int id, char *father, char *mother, int father_age = 40, int mother_age = 39)"<<endl;
	}

	~Student()
	{
		cout<<"~Student()"<<endl;
	}

	
};

int main(int argc, char **argv)
{
	Student s(100, "bill", "lily");
	
	return 0;
}

07th_static

person.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	static int cnt;
	char *name;
	int age;
	char *work;

public:

	static int getCount(void) 
	{ 
		return cnt; 
	}

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
		cnt++;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
		cnt++;
	}

	Person(char *name, int age, char *work = "none") 
	{
		cout <<"Pserson(char*, int), name = "<<name<<", age= "<<age<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
		cnt++;
	}

	Person(Person &per) 
	{
		cout <<"Pserson(Person &)"<<endl;
		this->age = per.age;

		this->name = new char[strlen(per.name) + 1];
		strcpy(this->name, per.name);

		this->work = new char[strlen(per.work) + 1];
		strcpy(this->work, per.work);
		cnt++;
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
		if (this->work) {
			cout << "work = "<<work<<endl;
			delete this->work;
		}
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

int Person::cnt = 0; /* 定义和初始化 */

int main(int argc, char **argv)
{

	cout << "person number = "<<Person::getCount()<<endl;

	return 0;
}

person2.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	static int cnt;
	char *name;
	int age;
	char *work;

public:

	static int getCount(void); 

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
		cnt++;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
		cnt++;
	}

	Person(char *name, int age, char *work = "none") 
	{
		cout <<"Pserson(char*, int), name = "<<name<<", age= "<<age<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
		cnt++;
	}

	Person(Person &per) 
	{
		cout <<"Pserson(Person &)"<<endl;
		this->age = per.age;

		this->name = new char[strlen(per.name) + 1];
		strcpy(this->name, per.name);

		this->work = new char[strlen(per.work) + 1];
		strcpy(this->work, per.work);
		cnt++;
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
		if (this->work) {
			cout << "work = "<<work<<endl;
			delete this->work;
		}
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}
};

int Person::cnt = 0; /* 定义和初始化 */

int Person::getCount(void) 
{ 
	return cnt; 
}


int main(int argc, char **argv)
{
	Person p[100];
	cout << "person number = "<<Person::getCount()<<endl;
	cout << "person number = "<<p[0].getCount()<<endl;
	cout << "person number = "<<p[1].getCount()<<endl;

	return 0;
}

08th_friend

point.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() {}
	Point(int x, int y) : x(x), y(y) {}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.setX(p1.getX()+p2.getX());
	n.setY(p1.getY()+p2.getY());
	return n;
}

int main(int argc, char **argv)
{
	Point p1(1, 2);
	Point p2(2, 3);

	Point sum = add(p1, p2);
	sum.printInfo();

	return 0;
}

point2.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() {}
	Point(int x, int y) : x(x), y(y) {}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}
	friend Point add(Point &p1, Point &p2);
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

int main(int argc, char **argv)
{
	Point p1(1, 2);
	Point p2(2, 3);

	Point sum = add(p1, p2);
	sum.printInfo();

	return 0;
}

09th_operator

person.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	static int cnt;
	char *name;
	int age;
	char *work;

public:

	static int getCount(void); 

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		work = NULL;
		cnt++;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		this->work = NULL;
		cnt++;
	}

	Person(char *name, int age, char *work = "none") 
	{
		cout <<"Pserson(char*, int), name = "<<name<<", age= "<<age<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		this->work = new char[strlen(work) + 1];
		strcpy(this->work, work);
		cnt++;
	}

	Person(const Person &per) 
	{
		cout <<"Pserson(Person &)"<<endl;
		this->age = per.age;

		this->name = new char[strlen(per.name) + 1];
		strcpy(this->name, per.name);

		this->work = new char[strlen(per.work) + 1];
		strcpy(this->work, per.work);
		cnt++;
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
		if (this->work) {
			cout << "work = "<<work<<endl;
			delete this->work;
		}
	}

	void setName(char *n)
	{
		name = n;
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void) const
	{
		//printf("name = %s, age = %d, work = %s\n", name, age, work); 
		cout<<"name = "<<name<<", age = "<<age<<", work = "<<work<<endl;
	}

	Person& operator=(const Person& p)
	{
		cout << "operator=(const Person& p)"<<endl;
	
		if (this == &p)
			return *this;
		this->age = p.age;

		if (this->name) {
			delete this->name;
		}
		if (this->work) {
			delete this->work;
		}

		this->name = new char[strlen(p.name) + 1];
		strcpy(this->name, p.name);
		
		this->work = new char[strlen(p.work) + 1];
		strcpy(this->work, p.work);

		return *this;
		
	}
	
};

int Person::cnt = 0; /* 定义和初始化 */

int Person::getCount(void) 
{ 
	return cnt; 
}


int main(int argc, char **argv)
{
	const Person p1("zhangsan", 10);

	cout<<"Person p2 = p1" <<endl;
	Person p2 = p1;
	
	Person p3;

	cout<<"p3=p1"<<endl;
	p3 = p1;
	cout<<"end"<<endl;
	p1.printInfo();
	p2.printInfo();
	p3.printInfo();

	

	return 0;
}

point.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() {}
	Point(int x, int y) : x(x), y(y) {}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}
	friend Point add(Point &p1, Point &p2);
	friend Point operator+(Point &p1, Point &p2);
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

Point operator+(Point &p1, Point &p2)
{
	cout<<"Point operator+(Point &p1, Point &p2)"<<endl;
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}


int main(int argc, char **argv)
{
	Point p1(1, 2);
	Point p2(2, 3);

	Point sum = p1+p2;
	sum.printInfo();

	return 0;
}

point2.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() {}
	Point(int x, int y) : x(x), y(y) {}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}
	friend Point add(Point &p1, Point &p2);
	friend Point operator+(Point &p1, Point &p2);
	friend Point operator++(Point &p);
	friend Point operator++(Point &p, int a);
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

Point operator+(Point &p1, Point &p2)
{
	cout<<"Point operator+(Point &p1, Point &p2)"<<endl;
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

/* Point p(1,2); ++p; */
Point operator++(Point &p)
{
	cout<<"++p"<<endl;
	p.x += 1;
	p.y += 1;
	return p;
}

/* Point p(1,2); p++; */
Point operator++(Point &p, int a)
{
	cout<<"p++"<<endl;
	Point n;
	n = p;
	p.x += 1;
	p.y += 1;
	return n;	
}

int main(int argc, char **argv)
{
	Point p1(1, 2);
	Point p2(2, 3);

	Point n = ++p1;
	n.printInfo();
	p1.printInfo();

	cout << "******************"<<endl;

	Point m = p2++;
	m.printInfo();
	p2.printInfo();

	return 0;
}

point3.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() 
	{
		cout<<"Point()"<<endl;
	}
	Point(int x, int y) : x(x), y(y) 
	{
		cout<<"Point(int x, int y)"<<endl;
	}

	Point(const Point& p)
	{
		cout<<"Point(const Point& p)"<<endl;
		x = p.x;
		y = p.y;
	}
	~Point() 
	{
		cout<<"~Point()"<<endl;
	}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}
	friend Point add(Point &p1, Point &p2);
	friend Point operator+(Point &p1, Point &p2);
	friend Point operator++(Point &p);
	friend Point operator++(Point &p, int a);
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

Point operator+(Point &p1, Point &p2)
{
	cout<<"Point operator+(Point &p1, Point &p2)"<<endl;
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

/* Point p(1,2); ++p; */
Point operator++(Point &p)
{
	cout<<"++p"<<endl;
	p.x += 1;
	p.y += 1;
	return p;
}

/* Point p(1,2); p++; */
Point operator++(Point &p, int a)
{
	cout<<"p++"<<endl;
	Point n;
	n = p;
	p.x += 1;
	p.y += 1;
	return n;	
}

int main(int argc, char **argv)
{
	Point p1(1, 2);

	cout<<"begin"<<endl;
	++p1;
	cout << "******************"<<endl;

	p1++;
	cout<<"end"<<endl;


	return 0;
}

point4.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() 
	{
		cout<<"Point()"<<endl;
	}
	Point(int x, int y) : x(x), y(y) 
	{
		cout<<"Point(int x, int y)"<<endl;
	}

	Point(const Point& p)
	{
		cout<<"Point(const Point& p)"<<endl;
		x = p.x;
		y = p.y;
	}
	~Point() 
	{
		cout<<"~Point()"<<endl;
	}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}
	friend Point add(Point &p1, Point &p2);
	friend Point operator+(Point &p1, Point &p2);
	friend Point& operator++(Point &p);
	friend Point operator++(Point &p, int a);
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

Point operator+(Point &p1, Point &p2)
{
	cout<<"Point operator+(Point &p1, Point &p2)"<<endl;
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

/* Point p(1,2); ++p; */
Point& operator++(Point &p)
{
	cout<<"++p"<<endl;
	p.x += 1;
	p.y += 1;
	return p;
}

/* Point p(1,2); p++; */
Point operator++(Point &p, int a)
{
	cout<<"p++"<<endl;
	Point n;
	n = p;
	p.x += 1;
	p.y += 1;
	return n;	
}

int main(int argc, char **argv)
{
	Point p1(1, 2);

	cout<<"begin"<<endl;
	++p1;
	cout << "******************"<<endl;

	p1++;
	cout<<"end"<<endl;


	return 0;
}

point5.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() 
	{
		cout<<"Point()"<<endl;
	}
	Point(int x, int y) : x(x), y(y) 
	{
		cout<<"Point(int x, int y)"<<endl;
	}

	Point(const Point& p)
	{
		cout<<"Point(const Point& p)"<<endl;
		x = p.x;
		y = p.y;
	}
	~Point() 
	{
		cout<<"~Point()"<<endl;
	}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}
	friend Point add(Point &p1, Point &p2);
	friend Point operator+(Point &p1, Point &p2);
	friend Point& operator++(Point &p);
	friend Point operator++(Point &p, int a);
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

Point operator+(Point &p1, Point &p2)
{
	cout<<"Point operator+(Point &p1, Point &p2)"<<endl;
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

/* Point p(1,2); ++p; */
Point& operator++(Point &p)
{
	cout<<"++p"<<endl;
	p.x += 1;
	p.y += 1;
	return p;
}

/* Point p(1,2); p++; */
Point operator++(Point &p, int a)
{
	cout<<"p++"<<endl;
	Point n;
	n = p;
	p.x += 1;
	p.y += 1;
	return n;	
}

int main(int argc, char **argv)
{
	Point p1(1, 2);
	Point m, n;

	cout<<"begin"<<endl;
	m = ++p1;
	cout << "******************"<<endl;

	n = p1++;
	cout<<"end"<<endl;


	return 0;
}

point6.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() 
	{
		cout<<"Point()"<<endl;
	}
	Point(int x, int y) : x(x), y(y) 
	{
		cout<<"Point(int x, int y)"<<endl;
	}

	Point(const Point& p)
	{
		cout<<"Point(const Point& p)"<<endl;
		x = p.x;
		y = p.y;
	}
	~Point() 
	{
		cout<<"~Point()"<<endl;
	}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}
	friend Point add(Point &p1, Point &p2);
	friend Point operator+(Point &p1, Point &p2);
	friend Point& operator++(Point &p);
	friend Point operator++(Point &p, int a);
	friend ostream& operator<<(ostream &o, Point p);
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

Point operator+(Point &p1, Point &p2)
{
	cout<<"Point operator+(Point &p1, Point &p2)"<<endl;
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}

/* Point p(1,2); ++p; */
Point& operator++(Point &p)
{
	cout<<"++p"<<endl;
	p.x += 1;
	p.y += 1;
	return p;
}

/* Point p(1,2); p++; */
Point operator++(Point &p, int a)
{
	cout<<"p++"<<endl;
	Point n;
	n = p;
	p.x += 1;
	p.y += 1;
	return n;	
}

ostream& operator<<(ostream &o, Point p)
{
	cout<<"("<<p.x<<", "<<p.y<<")";
	return o;
}

int main(int argc, char **argv)
{
	Point p1(1, 2);
	Point m, n;

	cout<<"begin"<<endl;
	m = ++p1;
	cout << "******************"<<endl;

	n = p1++;
	cout<<"end"<<endl;

	cout<<m<<" "<<n<<endl;

	return 0;
}

point7.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Point {
private:
	int x;
	int y;

public:
	Point() 
	{
		cout<<"Point()"<<endl;
	}
	Point(int x, int y) : x(x), y(y) 
	{
		cout<<"Point(int x, int y)"<<endl;
	}

	Point(const Point& p)
	{
		cout<<"Point(const Point& p)"<<endl;
		x = p.x;
		y = p.y;
	}
	~Point() 
	{
		cout<<"~Point()"<<endl;
	}

	int getX(){ return x; }
	int getY(){ return y; }
	void setX(int x){ this->x = x; }
	void setY(int y){ this->y = y; }
	void printInfo()
	{
		cout<<"("<<x<<", "<<y<<")"<<endl;
	}

	Point operator+(Point &p)
	{
		cout<<"operator+"<<endl;
		Point n;
		n.x = this->x + p.x;
		n.y = this->y + p.y;
		return n;
	}
	
	/* Point p(1,2); ++p; */
	Point& operator++(void)
	{
		cout<<"operator++(void)"<<endl;
		this->x += 1;
		this->y += 1;
		return *this;
	}
	
	/* Point p(1,2); p++; */
	Point operator++(int a)
	{
		cout<<"operator++(int a)"<<endl;
		Point n;
		n = *this;
		this->x += 1;
		this->y += 1;
		return n;	
	}

	friend Point add(Point &p1, Point &p2);
	friend ostream& operator<<(ostream &o, Point p);
};

Point add(Point &p1, Point &p2)
{
	Point n;
	n.x = p1.x+p2.x;
	n.y = p1.y+p2.y;
	return n;
}


ostream& operator<<(ostream &o, Point p)
{
	cout<<"("<<p.x<<", "<<p.y<<")";
	return o;
}

int main(int argc, char **argv)
{
	Point p1(1, 2);
	Point p2(2, 3);
	Point m, n;

	m = p1 + p2; /* m = p1.operator+(p2); */
	cout<<"add p1,p2 = "<<m<<endl;

	cout<<"begin"<<endl;
	m = ++p1;    /* m = p1.operator++(); */
	cout<<"m = "<<m<<" "<<"p1 = "<<p1<<endl;
	cout << "******************"<<endl;

	n = p1++;    /* m = p1.operator++(0); */
	cout<<"n = "<<n<<" "<<"p1 = "<<p1<<endl;
	cout<<"end"<<endl;

	return 0;
}

10th_inheritance

father_son.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Father {
private:
	int money;
public:
	void it_skill(void)
	{
		cout<<"father's it skill"<<endl;
	}

	int getMoney(void)
	{
		return money;
	}

	void setMoney(int money)
	{
		this->money = money;
	}
};

class Son : public Father {
private:
	int toy;
public:
	void play_game(void)
	{
		int m;
		
		cout<<"son paly game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);
	}
};


int main(int argc, char **argv)
{
	Son s;

	s.setMoney(10);
	cout << s.getMoney()<<endl;

	s.it_skill();
	s.play_game();
	
	return 0;
}

father_son2.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Father {
private:
	int money;

protected:
	int room_key;
	
public:
	void it_skill(void)
	{
		cout<<"father's it skill"<<endl;
	}

	int getMoney(void)
	{
		return money;
	}

	void setMoney(int money)
	{
		this->money = money;
	}
};

class Son : public Father {
private:
	int toy;
public:
	void play_game(void)
	{
		int m;
		
		cout<<"son paly game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		/* 外人不能拿父亲的房间钥匙
		 * 儿子可以
		 */
		room_key = 1; 
	}
};


int main(int argc, char **argv)
{
	Son s;

	s.setMoney(10);
	cout << s.getMoney()<<endl;

	s.it_skill();
	s.play_game();

	//s.room_key = 1;
	
	return 0;
}

father_son3.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Father {
private:
	int money;

protected:
	int room_key;
	
public:
	void it_skill(void)
	{
		cout<<"father's it skill"<<endl;
	}

	int getMoney(void)
	{
		return money;
	}

	void setMoney(int money)
	{
		this->money = money;
	}
};

class Son : public Father {
private:
	int toy;
	//using Father::it_skill;
public:
	using Father::room_key;
	//using Father::money;
	
	void play_game(void)
	{
		int m;
		
		cout<<"son paly game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		room_key = 1; 
	}
};


int main(int argc, char **argv)
{
	Son s;

	s.setMoney(10);
	cout << s.getMoney()<<endl;

	s.it_skill();
	s.play_game();

	s.room_key = 1;
	
	return 0;
}

father_son4.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Father {
private:
	int money;

protected:
	int room_key;
	
public:
	int address;
	
	void it_skill(void)
	{
		cout<<"father's it skill"<<endl;
	}

	int getMoney(void)
	{
		return money;
	}

	void setMoney(int money)
	{
		this->money = money;
	}
};

class Son_pub : public Father {
private:
	int toy;
public:
	
	void play_game(void)
	{
		int m;
		
		cout<<"son play game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		room_key = 1; 
	}
};


class Son_pro : protected Father {
private:
	int toy;
public:
	
	void play_game(void)
	{
		int m;
		
		cout<<"son play game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		room_key = 1; 
	}
};


class Son_pri : private Father {
private:
	int toy;
public:
	
	void play_game(void)
	{
		int m;
		
		cout<<"son play game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		room_key = 1; 
	}
};


int main(int argc, char **argv)
{
	Son_pub s_pub;
	Son_pro s_pro;
	Son_pri s_pri;

	s_pub.play_game();
	s_pro.play_game();
	s_pri.play_game();


	s_pub.it_skill();
	//s_pro.it_skill();  // error
	//s_pri.it_skill();	 // error

	return 0;
}

father_son5.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Father {
private:
	int money;

protected:
	int room_key;
	
public:
	int address;
	
	void it_skill(void)
	{
		cout<<"father's it skill"<<endl;
	}

	int getMoney(void)
	{
		return money;
	}

	void setMoney(int money)
	{
		this->money = money;
	}
};

class Son_pub : public Father {
private:
	int toy;
public:
	
	void play_game(void)
	{
		int m;
		
		cout<<"son play game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		room_key = 1; 
	}
};


class Son_pro : protected Father {
private:
	int toy;
public:
	
	void play_game(void)
	{
		int m;
		
		cout<<"son play game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		room_key = 1; 
	}
};


class Son_pri : private Father {
private:
	int toy;
public:
	
	void play_game(void)
	{
		int m;
		
		cout<<"son play game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		room_key = 1; 
	}
};

class Grandson_pub : public Son_pub {

public:
	void test(void) {
		room_key = 1; /* address is protected */ 
		address  = 2; /* address is public */ 
	}
};

class Grandson_pro : public Son_pro {

public:
	void test(void) {
		room_key = 1; /* address is protected */ 
		address  = 2; /* address is protected */ 
	}
};

class Grandson_pri : public Son_pri {

public:
	void test(void) {
		//room_key = 1;  // error
		//address  = 2;  // error
	}
};


int main(int argc, char **argv)
{
	Son_pub s_pub;
	Son_pro s_pro;
	Son_pri s_pri;

	s_pub.play_game();
	s_pro.play_game();
	s_pri.play_game();


	s_pub.it_skill();
	//s_pro.it_skill();  // error
	//s_pri.it_skill();	 // error

	Grandson_pub gs_pub;
	Grandson_pro gs_pro;

	gs_pub.address = 2;
	//gs_pro.address = 2;  // error

	return 0;
}

father_son6.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Father {
private:
	int money;

protected:
	int room_key;
	
public:
	void it_skill(void)
	{
		cout<<"father's it skill"<<endl;
	}

	int getMoney(void)
	{
		return money;
	}

	void setMoney(int money)
	{
		this->money = money;
	}
};

class Son : public Father {
private:
	int toy;
	//using Father::it_skill;
public:
	using Father::room_key;
	//using Father::money;
	
	void play_game(void)
	{
		int m;
		
		cout<<"son paly game"<<endl;

		/* money -= 1; 
		 * 错: 不能直接拿父亲的私房钱
		 */

		/*
		 * 但是可以问他要
		 */
		m = getMoney();
		m--;
		setMoney(m);

		room_key = 1; 
	}

	/* 覆写 override */
	void it_skill(void)
	{
		cout<<"son's it skill"<<endl;
	}
	
};


int main(int argc, char **argv)
{
	Son s;

	s.setMoney(10);
	cout << s.getMoney()<<endl;

	s.it_skill();
	s.play_game();

	s.room_key = 1;
	
	return 0;
}

person.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	static int cnt;
	char *name;
	int age;

public:

	static int getCount(void); 

	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
		cnt++;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
		cnt++;
	}

	Person(char *name, int age) 
	{
		cout <<"Pserson(char*, int), name = "<<name<<", age= "<<age<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);

		cnt++;
	}

	Person(Person &per) 
	{
		cout <<"Pserson(Person &)"<<endl;
		this->age = per.age;

		this->name = new char[strlen(per.name) + 1];
		strcpy(this->name, per.name);

		cnt++;
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
	}

	void setName(char *name)
	{
		if (this->name) {
			delete this->name;
		}
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		cout<<"name = "<<name<<", age = "<<age<<endl;
	}
};

int Person::cnt = 0; /* 定义和初始化 */

int Person::getCount(void) 
{ 
	return cnt; 
}

class Student : public Person {
};


int main(int argc, char **argv)
{
	Student s;
	s.setName("zhangsan");
	s.setAge(16);
	s.printInfo();

	return 0;
}

person_student.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Person {
private:
	char *name;
	int age;

public:
	int address;
	
	Person() {//cout <<"Pserson()"<<endl;
		name = NULL;
	}
	Person(char *name) 
	{
		//cout <<"Pserson(char *)"<<endl;
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
	}

	Person(char *name, int age) 
	{
		cout <<"Pserson(char*, int), name = "<<name<<", age= "<<age<<endl;
		this->age = age;

		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
	}

	Person(Person &per) 
	{
		cout <<"Pserson(Person &)"<<endl;
		this->age = per.age;

		this->name = new char[strlen(per.name) + 1];
		strcpy(this->name, per.name);
	}

	~Person()
	{
		cout << "~Person()"<<endl;
		if (this->name) {
			cout << "name = "<<name<<endl;
			delete this->name;
		}
	}

	void setName(char *name)
	{
		if (this->name) {
			delete this->name;
		}
		this->name = new char[strlen(name) + 1];
		strcpy(this->name, name);
	}
	int setAge(int a)
	{
		if (a < 0 || a > 150)
		{
			age = 0;
			return -1;
		}
		age = a;
		return 0;
	}
	void printInfo(void)
	{
		cout<<"name = "<<name<<", age = "<<age<<endl;
	}
};


class Student : public Person {
private:
	int grade;
	void setGrade(int grade) {this->grade = grade;}
	int getGrade(void) {return grade;}
public:
	void printInfo(void)
	{
		cout<<"Student ";
		Person::printInfo();
	}
};

void test_func(Person &p)
{
	p.printInfo();
}

int main(int argc, char **argv)
{
	Person p("lisi", 16);

	Student s;
	s.setName("zhangsan");
	s.setAge(16);

	test_func(p);
	test_func(s); /* Person &p = s里面的Person部分;
	               * p引用的是"s里面的Person部分"
	               */
	s.printInfo();

	return 0;
}

11th_multi_inheritance

Sofabed.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Sofa {
public:
	void watchTV(void) { cout<<"watch TV"<<endl; }
};

class Bed {
public:
	void sleep(void) { cout<<"sleep"<<endl; }
};

class Sofabed : public Sofa, public Bed {
};

int main(int argc, char **argv)
{
	Sofabed s;
	s.watchTV();
	s.sleep();
	return 0;
}

Sofabed2.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Sofa {
private:
	int weight;
public:
	void watchTV(void) { cout<<"watch TV"<<endl; }

	void setWeight(int weight) { this->weight = weight; }
	int getWeight(void) const { return weight; }
};

class Bed {
	private:
		int weight;
public:
	void sleep(void) { cout<<"sleep"<<endl; }
	void setWeight(int weight) { this->weight = weight; }
	int getWeight(void) const { return weight; }
};

class Sofabed : public Sofa, public Bed {
};

int main(int argc, char **argv)
{
	Sofabed s;
	s.watchTV();
	s.sleep();

	//s.setWeight(100); /* error, 有二义性 */
	s.Sofa::setWeight(100);
	
	return 0;
}

Sofabed3.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Furniture {
private:
	int weight;
public:
	void setWeight(int weight) { this->weight = weight; }
	int getWeight(void) const { return weight; }
};

class Sofa : virtual public Furniture {
private:
	int a;
public:
	void watchTV(void) { cout<<"watch TV"<<endl; }
};

class Bed : virtual public Furniture {
private:
	int b;
public:
	void sleep(void) { cout<<"sleep"<<endl; }
};

class Sofabed : public Sofa, public Bed {
private:
	int c;
};

int main(int argc, char **argv)
{
	Sofabed s;
	s.watchTV();
	s.sleep();

	s.setWeight(100);
	
	return 0;
}

12th_constructor_2

Sofabed.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Furniture {
private:
	int weight;
public:
	void setWeight(int weight) { this->weight = weight; }
	int getWeight(void) const { return weight; }
public:
	Furniture() { cout <<"Furniture()"<<endl; }
};

class Vertification3C {
public:
	Vertification3C() { cout <<"Vertification3C()"<<endl; }
};

class Sofa : virtual public Furniture , virtual public Vertification3C{
private:
	int a;
public:
	void watchTV(void) { cout<<"watch TV"<<endl; }
public:
	Sofa() { cout <<"Sofa()"<<endl; }
};

class Bed : virtual public Furniture, virtual public Vertification3C {
private:
	int b;
public:
	void sleep(void) { cout<<"sleep"<<endl; }
public:
	Bed() { cout <<"Bed()"<<endl; }
};

class Sofabed : public Sofa, public Bed {
private:
	int c;
public:
	Sofabed() { cout <<"Sofabed()"<<endl; }
};

class LeftRightCom {
public:
	LeftRightCom() { cout <<"LeftRightCom()"<<endl; }
};

class Date {
public:
	Date() { cout <<"Date()"<<endl; }
};

class Type {
public:
	Type() { cout <<"Type()"<<endl; }
};


class LeftRightSofabed : public Sofabed, public LeftRightCom {
private:
	Date date;
	Type type;

public:
	LeftRightSofabed() { cout <<"LeftRightSofabed()"<<endl; }
	
};

int main(int argc, char **argv)
{
	LeftRightSofabed s;
	return 0;
}

Sofabed2.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Furniture {
private:
	int weight;
public:
	void setWeight(int weight) { this->weight = weight; }
	int getWeight(void) const { return weight; }
public:
	Furniture() { cout <<"Furniture()"<<endl; }
};

class Vertification3C {
public:
	Vertification3C() { cout <<"Vertification3C()"<<endl; }
};

class Sofa : virtual public Furniture , virtual public Vertification3C{
private:
	int a;
public:
	void watchTV(void) { cout<<"watch TV"<<endl; }
public:
	Sofa() { cout <<"Sofa()"<<endl; }
};

class Bed : virtual public Furniture, virtual public Vertification3C {
private:
	int b;
public:
	void sleep(void) { cout<<"sleep"<<endl; }
public:
	Bed() { cout <<"Bed()"<<endl; }
};

class Sofabed : public Sofa, public Bed {
private:
	int c;
public:
	Sofabed() { cout <<"Sofabed()"<<endl; }
};

class LeftRightCom {
public:
	LeftRightCom() { cout <<"LeftRightCom()"<<endl; }
};

class Date {
public:
	Date() { cout <<"Date()"<<endl; }
};

class Type {
public:
	Type() { cout <<"Type()"<<endl; }
};


class LeftRightSofabed : public Sofabed, virtual public LeftRightCom {
private:
	Date date;
	Type type;

public:
	LeftRightSofabed() { cout <<"LeftRightSofabed()"<<endl; }
	
};

int main(int argc, char **argv)
{
	LeftRightSofabed s;
	return 0;
}

Sofabed3.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Furniture {
private:
	int weight;
public:
	void setWeight(int weight) { this->weight = weight; }
	int getWeight(void) const { return weight; }
public:
	Furniture() { cout <<"Furniture()"<<endl; }
};

class Vertification3C {
public:
	Vertification3C() { cout <<"Vertification3C()"<<endl; }
};

class Sofa : virtual public Furniture , virtual public Vertification3C{
private:
	int a;
public:
	void watchTV(void) { cout<<"watch TV"<<endl; }
public:
	Sofa() { cout <<"Sofa()"<<endl; }
};

class Bed : virtual public Furniture, virtual public Vertification3C {
private:
	int b;
public:
	void sleep(void) { cout<<"sleep"<<endl; }
public:
	Bed() { cout <<"Bed()"<<endl; }
};

class Sofabed : public Sofa, public Bed {
private:
	int c;
public:
	Sofabed() { cout <<"Sofabed()"<<endl; }
	Sofabed(char *abc) { cout <<"Sofabed(char *abc)"<<endl; }
};

class LeftRightCom {
public:
	LeftRightCom() { cout <<"LeftRightCom()"<<endl; }
	LeftRightCom(char *abc) { cout <<"LeftRightCom(char *abc)"<<endl; }
};

class Date {
public:
	Date() { cout <<"Date()"<<endl; }
	Date(char *abc) { cout <<"Date(char *abc)"<<endl; }
};

class Type {
public:
	Type() { cout <<"Type()"<<endl; }
	Type(char *abc) { cout <<"Type(char *abc)"<<endl; }
};


class LeftRightSofabed : public Sofabed, virtual public LeftRightCom {
private:
	Date date;
	Type type;

public:
	LeftRightSofabed() { cout <<"LeftRightSofabed()"<<endl; }
	LeftRightSofabed(char *str1, char *str2, char *str3) : Sofabed(str1), LeftRightCom(str2), date(str3) { cout <<"LeftRightSofabed()"<<endl; }
	
};

int main(int argc, char **argv)
{
	LeftRightSofabed s("abc", "2343", "yyy");
	return 0;
}

13th_Polymorphism

Human.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
public:
	void eating(void) { cout<<"use hand to eat"<<endl; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
};

void test_eating(Human& h)
{
	h.eating();
}

int main(int argc, char **argv)
{
	Human h;
	Englishman e;
	Chinese c;

	test_eating(h);
	test_eating(e);
	test_eating(c);

	return 0;
}

Human2.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
};

void test_eating(Human& h)
{
	h.eating();
}

int main(int argc, char **argv)
{
	Human h;
	Englishman e;
	Chinese c;

	test_eating(h);
	test_eating(e);
	test_eating(c);

	cout<<"sizeof(Human) = "<<sizeof(h)<<endl;
	cout<<"sizeof(Englishman) = "<<sizeof(e)<<endl;
	cout<<"sizeof(Chinese) = "<<sizeof(c)<<endl;

	return 0;
}

Human3.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
};

void test_eating(Human h)
{
	h.eating();
}

int main(int argc, char **argv)
{
	Human h;
	Englishman e;
	Chinese c;

	test_eating(h);
	test_eating(e);
	test_eating(c);

	cout<<"sizeof(Human) = "<<sizeof(h)<<endl;
	cout<<"sizeof(Englishman) = "<<sizeof(e)<<endl;
	cout<<"sizeof(Chinese) = "<<sizeof(c)<<endl;

	return 0;
}

Human4.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
	virtual ~Human() { cout<<"~Human()"<<endl; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
};

void test_eating(Human h)
{
	h.eating();
}

int main(int argc, char **argv)
{
	Human* h = new Human;
	Englishman* e = new Englishman;
	Chinese* c = new Chinese;

	Human *p[3] = {h, e, c};
	int i;

	for (i = 0; i < 3; i++)
	{
		p[i]->eating();
		delete p[i];
	}


	return 0;
}

Human5.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
	virtual ~Human() { cout<<"~Human()"<<endl; }
	virtual void test(void) {cout<<"Human's test"<<endl; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
	virtual int test(void) {cout<<"Englishman's test"<<endl; return 1; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
	virtual int test(void) {cout<<"Chinese's test"<<endl; return 1; }
};

void test_eating(Human& h)
{
	h.eating();
}

void test_return(Human& h)
{
	h.test();
}



int main(int argc, char **argv)
{
	Human h;
	Englishman e;
	Chinese c;

	test_return(h);
	test_return(e);
	test_return(c);


	return 0;
}

Human6.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
	virtual ~Human() { cout<<"~Human()"<<endl; }
	virtual Human* test(void) {cout<<"Human's test"<<endl; return this; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
	virtual Englishman* test(void) {cout<<"Englishman's test"<<endl; return this; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
	virtual Chinese* test(void) {cout<<"Chinese's test"<<endl; return this; }
};

void test_eating(Human& h)
{
	h.eating();
}

void test_return(Human& h)
{
	h.test();
}



int main(int argc, char **argv)
{
	Human h;
	Englishman e;
	Chinese c;

	test_return(h);
	test_return(e);
	test_return(c);


	return 0;
}

14th_convert

convert.c

cpp 复制代码 
#include <stdio.h>

int main(int argc, char **argv)
{
	double d = 100.1;
	int i = d;  // doubleתΪint
	char *str = "100ask.taobao.com";
	int *p = str; // char *תΪint * 

	printf("i = %d, str = 0x%x, p = 0x%x\n", i, str, p);

	return 0;
}

convert2.c

cpp 复制代码 
#include <stdio.h>

int main(int argc, char **argv)
{
	double d = 100.1;
	int i = d;  // doubleתΪint
	char *str = "100ask.taobao.com";
	int *p = (int *)str; // char *תΪint * 

	printf("i = %d, str = 0x%x, p = 0x%x\n", i, (unsigned int)str, (unsigned int)p);

	return 0;
}

convert3.cpp

cpp 复制代码 
#include <stdio.h>

int main(int argc, char **argv)
{
	double d = 100.1;
	int i = d;  // doubleתΪint
	char *str = "100ask.taobao.com";
	int *p = reinterpret_cast<int *>(str); // char *תΪint * 

	printf("i = %d, str = 0x%x, p = 0x%x\n", i, reinterpret_cast<unsigned int>(str), reinterpret_cast<unsigned int>(p));

	return 0;
}

convert4.cpp

cpp 复制代码 
#include <stdio.h>

int main(int argc, char **argv)
{
	double d = 100.1;
	int i = d;  // doubleתΪint
	const char *str = "100ask.taobao.com";
	char *str2 = const_cast<char *>(str);
	int *p = reinterpret_cast<int *>(str2); // char *תΪint * 

	printf("i = %d, str = 0x%x, p = 0x%x\n", i, reinterpret_cast<unsigned int>(str), reinterpret_cast<unsigned int>(p));

	return 0;
}

convert5_Human.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
	virtual ~Human() { cout<<"~Human()"<<endl; }
	virtual Human* test(void) {cout<<"Human's test"<<endl; return this; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
	virtual Englishman* test(void) {cout<<"Englishman's test"<<endl; return this; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
	virtual Chinese* test(void) {cout<<"Chinese's test"<<endl; return this; }
};

void test_eating(Human& h)
{
	Englishman *pe;
	Chinese    *pc;
	
	h.eating();

	/* 想分辨这个"人"是英国人还是中国人? */
	if (pe = dynamic_cast<Englishman *>(&h))
		cout<<"This human is Englishman"<<endl;

	if (pc = dynamic_cast<Chinese *>(&h))
		cout<<"This human is Chinese"<<endl;
	
	
}




int main(int argc, char **argv)
{
	Human h;
	Englishman e;
	Chinese c;

	test_eating(h);
	test_eating(e);
	test_eating(c);


	return 0;
}

convert6_Human.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
	virtual ~Human() { cout<<"~Human()"<<endl; }
	virtual Human* test(void) {cout<<"Human's test"<<endl; return this; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
	virtual Englishman* test(void) {cout<<"Englishman's test"<<endl; return this; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
	virtual Chinese* test(void) {cout<<"Chinese's test"<<endl; return this; }
};

class Guangximan : public Chinese {
public:
	void eating(void) { cout<<"use chopsticks to eat, I come from guangxi"<<endl; }
};

void test_eating(Human& h)
{
	Englishman *pe;
	Chinese    *pc;
	Guangximan *pg;
	
	h.eating();

	/* 想分辨这个"人"是英国人还是中国人? */
	if (pe = dynamic_cast<Englishman *>(&h))
		cout<<"This human is Englishman"<<endl;

	if (pc = dynamic_cast<Chinese *>(&h))
		cout<<"This human is Chinese"<<endl;
	
	if (pg = dynamic_cast<Guangximan *>(&h))
		cout<<"This human is Guangximan"<<endl;
	
}




int main(int argc, char **argv)
{
	//Human h;
	//Englishman e;
	//Chinese c;
	Guangximan g;

	//test_eating(h);
	//test_eating(e);
	//test_eating(c);
	test_eating(g);


	return 0;
}

convert7_Human.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
	virtual ~Human() { cout<<"~Human()"<<endl; }
	virtual Human* test(void) {cout<<"Human's test"<<endl; return this; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
	virtual Englishman* test(void) {cout<<"Englishman's test"<<endl; return this; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
	virtual Chinese* test(void) {cout<<"Chinese's test"<<endl; return this; }
};

class Guangximan : public Chinese {
public:
	void eating(void) { cout<<"use chopsticks to eat, I come from guangxi"<<endl; }
};

void test_eating(Human& h)
{
#if 1
	//Englishman& pe = dynamic_cast<Englishman&>(h);
	Chinese&    pc = dynamic_cast<Chinese&>(h);
	Guangximan& pg = dynamic_cast<Guangximan&>(h);
#else
	Englishman& pe = reinterpret_cast<Englishman&>(h);
	Chinese&	pc = reinterpret_cast<Chinese&>(h);
	Guangximan& pg = reinterpret_cast<Guangximan&>(h);
#endif

	h.eating();
	
}




int main(int argc, char **argv)
{
	//Human h;
	//Englishman e;
	//Chinese c;
	Guangximan g;

	//test_eating(h);
	//test_eating(e);
	//test_eating(c);
	test_eating(g);


	return 0;
}

convert8_Human.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) { cout<<"use hand to eat"<<endl; }
	virtual ~Human() { cout<<"~Human()"<<endl; }
	virtual Human* test(void) {cout<<"Human's test"<<endl; return this; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
	virtual Englishman* test(void) {cout<<"Englishman's test"<<endl; return this; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
	virtual Chinese* test(void) {cout<<"Chinese's test"<<endl; return this; }
};

class Guangximan : public Chinese {
public:
	void eating(void) { cout<<"use chopsticks to eat, I come from guangxi"<<endl; }
};

void test_eating(Human& h)
{
#if 1
	//Englishman& pe = dynamic_cast<Englishman&>(h);
	Chinese&    pc = dynamic_cast<Chinese&>(h);
	Guangximan& pg = dynamic_cast<Guangximan&>(h);
#else
	Englishman& pe = reinterpret_cast<Englishman&>(h);
	Chinese&	pc = reinterpret_cast<Chinese&>(h);
	Guangximan& pg = reinterpret_cast<Guangximan&>(h);
#endif

	h.eating();
	
}




int main(int argc, char **argv)
{
	Human h;
	//Englishman e;
	//Chinese c;
	Guangximan g;

	Englishman *pe;

	pe = static_cast<Englishman *>(&h);

	//Englishman *pe2 = static_cast<Englishman *>(&g);

	Chinese *pc = static_cast<Chinese *>(&g);

	return 0;
}

15th_abstract

1th

Human.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) = 0;
	virtual void wearing(void) = 0;
	virtual void driving(void) = 0;
	virtual ~Human() { cout<<"~Human()"<<endl; }
	virtual Human* test(void) {cout<<"Human's test"<<endl; return this; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	void wearing(void) {cout<<"wear english style"<<endl; }
	void driving(void) {cout<<"drive english car"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
	virtual Englishman* test(void) {cout<<"Englishman's test"<<endl; return this; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	void wearing(void) {cout<<"wear chinese style"<<endl; }
	void driving(void) {cout<<"drive chinese car"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
	virtual Chinese* test(void) {cout<<"Chinese's test"<<endl; return this; }
};



int main(int argc, char **argv)
{
	//Human h;
	Englishman e;
	Chinese c;

	return 0;
}

Human2.cpp

cpp 复制代码 
#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Human {
private:
	int a;
public:
	virtual void eating(void) = 0;
	virtual void wearing(void) = 0;
	virtual void driving(void) = 0;
	virtual ~Human() { cout<<"~Human()"<<endl; }
	virtual Human* test(void) {cout<<"Human's test"<<endl; return this; }
};

class Englishman : public Human {
public:
	void eating(void) { cout<<"use knife to eat"<<endl; }
	void wearing(void) {cout<<"wear english style"<<endl; }
	void driving(void) {cout<<"drive english car"<<endl; }
	virtual ~Englishman() { cout<<"~Englishman()"<<endl; }
	virtual Englishman* test(void) {cout<<"Englishman's test"<<endl; return this; }
};


class Chinese : public Human {
public:
	void eating(void) { cout<<"use chopsticks to eat"<<endl; }
	void wearing(void) {cout<<"wear chinese style"<<endl; }
	//void driving(void) {cout<<"drive chinese car"<<endl; }
	virtual ~Chinese() { cout<<"~Chinese()"<<endl; }
	virtual Chinese* test(void) {cout<<"Chinese's test"<<endl; return this; }
};

class Guangximan : public Chinese {
	void driving(void) {cout<<"drive guangxi car"<<endl; }
};

int main(int argc, char **argv)
{
	//Human h;
	Englishman e;
	Guangximan g;

	return 0;
}

2th

Chinese.cpp

cpp 复制代码 
#include "Chinese.h"

void Chinese::eating(void) 
{ 
	cout<<"use chopsticks to eat"<<endl; 
}

void Chinese::wearing(void) 
{
	cout<<"wear chinese style"<<endl; 
}

void Chinese::driving(void) 
{
	cout<<"drive chinese car"<<endl; 
}

Chinese::~Chinese() 
{ 
	cout<<"~Chinese()"<<endl; 
}

Chinese.h

cpp 复制代码 
#ifndef _CHINESE_H
#define _CHINESE_H

#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Chinese{
public:
	void eating(void);
	void wearing(void);
	void driving(void);
	~Chinese();
};

#endif

Englishman.cpp

cpp 复制代码 
#include "Englishman.h"

void Englishman::eating(void) 
{ 
	cout<<"use knife to eat"<<endl; 
}

void Englishman::wearing(void) 
{
	cout<<"wear english style"<<endl; 
}

void Englishman::driving(void) 
{
	cout<<"drive english car"<<endl; 
}

Englishman::~Englishman() 
{ 
	cout<<"~Englishman()"<<endl; 
}

Englishman.h

cpp 复制代码 
#ifndef _ENGLISHMAN_H
#define _ENGLISHMAN_H

#include <iostream>
#include <string.h>
#include <unistd.h>

using namespace std;

class Englishman {
public:
	void eating(void);
	void wearing(void);
	void driving(void);
	~Englishman();
};

#endif

main.cpp

cpp 复制代码 
#include "Englishman.h"
#include "Chinese.h"

int main(int argc, char **argv)
{
	Englishman e;
	Chinese c;

	e.eating();
	c.eating();
	
	return 0;
}

Makefile

bash 复制代码 
Human: main.o Chinese.o Englishman.o
	g++ -o $@ $^

%.o : %.cpp
	g++ -c -o $@ $<

clean:
	rm -f *.o Human
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