shiti9_5_2.cpp

为初学者提供的最佳的C++程序设计源程序库

#include<iostream.h>
class Point
{
public:
	Point(){X=Y=0;}
	int GetX(){return X;}
	int GetY(){return Y;}
	Point& operator++();
	Point operator++(int);
    Point& operator--();
    Point operator--(int);
	void Print(){cout<<"This point is("<<X<<","<<Y<<")"<<endl;}
private:
	int X,Y;
};
Point& Point::operator++()
{
	X++;
	Y++;
	return *this;
}
Point Point::operator++(int)
{
	Point temp=*this;
	++*this;
	return temp;
}
Point& Point::operator--()
{
	X--;
	Y--;
	return *this;
}
Point Point::operator--(int)
{
	Point temp=*this;
	--*this;
	return temp;
}
void main()
{
	Point obj;
	obj.Print();
	obj++;
	obj.Print();
	++obj;
	obj.Print();
	obj--;
	obj.Print();
	--obj;
	obj.Print();
}