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1. 重载双目运算符

例如一个 == 的demo

• 调用如下

#include "Time.h"#include "Date.h"#include 
   
    using namespace std;int main() {    CTime time1(12, 12, 12);    CTime time2(12, 12, 12);    bool bRet = time1 == time2;    cout<<"Result = "<
    
     <
    
   

• 头文件

#ifndef TIME_H#define TIME_Hclass CTime{public:    CTime(int hour, int minute, int second);    // 双目运算符    bool operator== (CTime& time);private:    int m_nHour;    int m_nMinute;    int m_nSecond;};#endif

• 实现类

#include 
   
    #include "Time.h"using namespace std;CTime::CTime(int hour, int minute, int second) {    m_nHour = hour;    m_nMinute = minute;    m_nSecond = second;}bool CTime::operator==(CTime& time){    if(m_nHour == time.m_nHour        && m_nMinute == time.m_nMinute        && m_nSecond == time.m_nSecond) {        return true;    }    return false;}
   

2. 单目运算符

这里已自增运算符为例

• 调用实现

#include "Time.h"#include "Date.h"#include 
   
    using namespace std;int main() {    CTime time(1, 1, 1);    time ++;    // Hour:1 Minute:1 Second:2    cout<<"Hour:"<
    
     <<" Minute:"<
     
      <<" Second:"<
      
       <
      
     
    
   

• 头文件定义

#ifndef TIME_H#define TIME_Hclass CTime{public:    CTime(int hour, int minute, int second);    CTime operator+(CTime time);    CTime operator++();    // 区分后置    CTime operator++(int);    int getHour();    int getMinute();    int getSecond();private:    int m_nHour;    int m_nMinute;    int m_nSecond;};#endif

• 类的实现

#include 
   
    #include "Time.h"using namespace std;CTime::CTime(int hour, int minute, int second) {    m_nHour = hour;    m_nMinute = minute;    m_nSecond = second;}int CTime::getHour(){    return m_nHour;}int CTime::getMinute(){    return m_nMinute;}int CTime::getSecond(){    return m_nSecond;}CTime CTime::operator+(CTime time){    m_nHour = m_nHour + time.m_nHour;    m_nMinute = m_nMinute + time.m_nMinute;    m_nSecond = m_nSecond + time.m_nSecond;    return *this;}CTime CTime::operator++(){    CTime time(0, 0, 1);    *this = *this + time;    return *this;}// 区分后置CTime CTime::operator++(int){    CTime time(*this);    CTime time2(0, 0, 1);    *this = *this + time2;    return *this;}
   

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