2023.4.21 （2）

//递增运算符的重载
#include <iostream>
using namespace std;
class Myinteger
{
    friend ostream& operator<<(ostream &cout,Myinteger &myint);
public:

    Myinteger()
    {
        m_Num = 0;
    }
    //重载前置++运算符
    Myinteger& operator++()//返回引用为了对一个数值进行操作
    {
        m_Num++;
        return *this;//返回自身
    }
    //重载后置++运算符
    Myinteger operator++(int)//int代表占位参数，可以区分前置后置递增
    {
        //先记录当时的结果
        Myinteger temp = *this;
        //后递增
        m_Num++;
        //返回记录的结果
        return temp;
    }
private:
    int m_Num;
};
//重载<<运算符
ostream& operator<<(ostream &cout,Myinteger &myint)
{
    cout<<myint.m_Num<<endl;
    return cout;
}
void test01()
{
    Myinteger myint;
    cout<<++(++myint)<<endl;
    cout<<myint<<endl;
}
void test02()
{
    Myinteger myint;
    cout<<myint++<<endl;
    cout<<myint<<endl;
}
int main()
{
    test01();
    test02();
    return 0;
}