C++作业3 - 技术栈

设计一个Per类，类中包含私有成员:姓名、年龄、指针成员身高、体重，再设计一个Stu类，类中包含私有成员:成绩、Per类对象p1，设计这两个类的构造函数、析构函数和拷贝构造函数。

代码：

cpp 复制代码

#include <iostream>

using namespace std;

class Per
{
private:
    string name;
    int age;
    double *height;
    double *weight;
public:
    Per()
    {
        cout << "per无参" << endl;
    }

    Per(string name,int age,double height,double weight):name(name),age(age),height(new double(height)),weight(new double(weight))
    {
        cout << "per有参" << endl;
    }

    Per(const Per &other):name(other.name),age(other.age),height(new double(*(other.height))),weight(new double(*(other.weight)))
    {
        cout << "per拷贝" << endl;
    }

    ~Per()
    {
        delete height;
        delete height;
        height = nullptr;
        weight = nullptr;
        cout << "per析构" << endl;
    }

    void show();

};

void Per::show()
{
    cout << "name:" << name << endl;
    cout << "age:" << age << endl;
    cout << "height:" << *height << endl;
    cout << "weight:" << *weight << endl;
}

class Stu
{
private:
    double score;
    Per p1;
public:
    Stu()
    {
       cout << "stu无参" << endl;
    }

    Stu(double score,string name,int age,double height,double weight):score(score),p1(name,age,height,weight)
    {
        cout << "stu有参" << endl;
    }

    Stu(const Stu &other):score(other.score),p1(other.p1)
    {
        cout << "stu拷贝" << endl;
    }

    ~Stu()
    {
        cout << "stu析构" << endl;
    }

    void show();
};

void Stu::show()
{
    cout << "score:" << score << endl;
    p1.show();
}

int main()
{
    Per s1("张三",18,1.7,120);
    s1.show();
    cout << "-----------------------" << endl;
    Per s2(s1);
    s2.show();
    cout << "-----------------------" << endl;
    Stu s3(98,"李四",21,1.8,125);
    s3.show();
    cout << "-----------------------" << endl;
    Stu s4(s3);
    s4.show();
    return 0;
}

运行结果：

思维导图: