定义后++时不再需要使用&  此时返回值是一个对象 可以参考上一节课程 //Coordinate operator++(int)

声明时也是

主函数

#include <iostream>

#include "Coordinate.h"

using namespace std;

int main()

{

Coordinate coor1(1, 3);

cout << coor1.getX()<<","<<coor1.getY() << endl;

//cout << (coor1++).getX();这样的输出是-858993460

coor1++;

cout << coor1.getX() << "," << coor1.getY() << endl;

system("pause");

return 0;

}

定义

#include "Coordinate.h"

Coordinate::Coordinate(int x,int y)

{

m_iX = x;

m_iY = y;

}

int Coordinate::getX()

{

return m_iX;

}

int Coordinate::getY()

{

return m_iY;

}

Coordinate &Coordinate::operator++(int)

{

Coordinate old(*this);

this->m_iX++;

this->m_iY++;

return old;

}

声明  

#include <iostream>

using namespace std;

class Coordinate

{

public:

Coordinate(int ,int);

Coordinate &operator++(int);

int getX();

int getY();

private:

int m_iX;

int m_iY;

};