operator++() 和operator++(int)

#include <iostream>

using namespace std;

class A{

public:

    int a;

public:

    A& operator++(){

        cout<<"A& operator++()"<<endl;

        a=a+1;

        return *this;

    }

    A operator++(int){

        cout<<"A operator++(int)"<<endl;

        A b=*this;

        a=a+1;

        return  b;

    }

};

int _tmain(int argc, _TCHAR* argv[])

{

    A test;

    test.a=12;

    test++;

    ++test;

    cout<<test.a<<endl;

    system("pause");

}

运行结果：

A operator++(int)

A& operator++()

14

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