ex_this.cpp

郑阿齐VC教材

#include <iostream.h>
class COne
{
public:
	COne() 
	{ 	x = y = 0; 
	}
	COne(int a, int b) 
	{	x = a; 	y = b; 
	}
	void copy(COne &a); 	// 对象引用作函数参数
	void print() 
	{
	cout<<x<<" , "<<y<<endl; 
	}
private:
    int x, y;
};
void COne::copy(COne &a)
{
    if (this == &a) return; 
    *this = a; 
}
void main()
{
    COne one, two(3, 4);
    one.print();
    one.copy(two);
    one.print();
}