C++之面向对象编程多文件文件示例

我在人间贩卖青春2026-02-09 8:09

一般将类的声明放在.h文件中，类中成员函数的定义放在.cpp文件中

cpp 复制代码

/*person.h*/
#ifndef __PERSON_H__
#define __PERSON_H__

#include <iostream>
using namespace std;

class person{
private:
    int age;
    string name;
public:
    person(int age, const string& name);
    void whoami(void);
};

#endif

cpp 复制代码

/*person.cpp*/
#include "person.h"

person::person(int age, const string& name){
    this->age = age;
    this->name = name;
}
void person::whoami(void){
    cout << "我是: " << name << endl;
}

cpp 复制代码

#ifndef __STUDENT_H__
#define __STUDENT_H__

#include "person.h"

class student: public person{
private:
    float score;
public:
    student(int age, const string& name, float score);
    void whoami(void);
};

#endif

cpp 复制代码

/*student.cpp*/
#include "student.h"

student::student(int age, const string& name, float score):person(age,name){
    this->score = score;
}
void student::whoami(void){
    person::whoami();
    cout << "我的成绩是: " << score << endl;
}

cpp 复制代码

/*main.cpp*/
#include "student.h"

int main(void){
    student s1(22, "刘备", 81.5);
    s1.whoami();
    return 0;
}

bash 复制代码

g++ person.cpp student.cpp main.cpp
./a.out