1. 可以重载的运算符

1. 算法运算符 + - * / %
2. 逻辑运算符 && || !
3. 关系运算符 > < = >= <= == !=
4. 位运算符 ~ << >> & ^ |
5. 自增自减运算符 ++ –
6. 复合赋值运算符 += -= *= /= %=

2.不能重载的运算符

1. ?: 或 * 或 ::(域) 或 sizeof
2. 不需要重载的运算符 = （赋值）和 & (取地址符)
3. 赋值函数

3.dmeo

头文件

#ifndef TIME_H
#define TIME_H
class CTime {

public:
    CTime(int hour, int minute, int second);

    // 赋值运算符
    CTime& operator=(CTime& time);

private:
    int m_nHour;
    int m_nMinute;
    int m_nSecond
};

#endif

实现

#include "Time.h"

CTime::CTime(int hour, int minute, int second)
{
    m_nHour = hour;
    m_nMinute = minute;
    m_nSecond = second;
}

// 赋值运算符
CTime& CTime :: operator=(CTime& time){
    if(this == &time) {
        return *this;
    }

    m_nHour = time.m_nHour;
    m_nMinute = time.m_nMinute;
    m_nSecond = time.m_nSecond;

    return *this;
}