proj9_03.cpp

C++程序设计教程的全部源代码 包含与教程同步的PPT 方便学习

#include <iostream.h> 
class sample
{
private:
	int counter;
public:
	sample()
	{
		counter=2;
	}
	sample sample :: operator + (sample a)
	{
		sample temp;		//临时对象 
		temp.counter = counter + a.counter;	
		return temp;		//返回临时对象 
	}
	
	void display()
	{
		cout<<counter<<endl;
	}
};
void main()
{
	sample obj1 , obj2 , obj3;
	obj3=obj1 + obj2;
    obj3.display(); 
	sample obj4;
	obj4=obj3 + obj1 + obj2;
	obj4.display();
}