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1.运算符重载

例如 << 是C++ 中的左移运算符，但在输出操作中与cout 配合则被称之为流插入运算符，作用是进行输出。，这种就是运算符重载

1.1 未进行运算符重载的demo

#include "Time.h"#include "Date.h"#include 
   
    using namespace std;CTime AddTime(CTime& time1, CTime& time2) {    int hour = time1.getHour() + time2.getHour();    return CTime(hour);}int main() {    CTime time1(1);    CTime time2(2);    CTime time3 = AddTime(time1, time2);    cout<<"hour = "<< time3.getHour()<
   

1.2 运算符重载的demo

#include "Time.h"#include "Date.h"#include 
   
    using namespace std;// 运算符重载CTime operator+(CTime& time1, CTime& time2){    int hour = time1.getHour() + time2.getHour();    return CTime(hour);}int main() {    CTime time1(1);    CTime time2(2);    // 使用运算符重载会更加直观    CTime time3 = time1 + time2;    cout<<"hour = "<< time3.getHour()<
   

2.运算符重载demo

• 头文件定义， operator

#ifndef TIME_H#define TIME_Hclass CTime{public:    // 构造函数    CTime();    // 带参数构造函数    CTime(int hour);    // 析构函数    ~CTime();    void setHour(int hour);    int getHour();    // 运算符重载    CTime operator+(CTime& time);private:    int m_nHour;};#endif

• 声明文件实现，operator

#include 
   
    #include "Time.h"using namespace std;// 构造函数CTime::CTime() {    m_nHour = 0;}CTime::CTime(int hour) {    m_nHour = hour;}CTime::~CTime(){    //std::cout<<"~CTime"<
    
     m_nHour + time.m_nHour);}
    
   

• 简洁明了的调用

#include "Time.h"#include "Date.h"#include 
   
    using namespace std;int main() {    CTime time1(1);    CTime time2(2);    // 使用运算符重载会更加直观    CTime time3 = time1 + time2;    cout<<"hour = "<< time3.getHour()<
   

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