C语言相关程序

#include<iostream.h>
#include<malloc.h>
class point 
{
	int x,y;
public:
	point(){};
	point(int l,int w)
	{
		x=l;
		y=w;

	}
	void disp()
	{
		cout<<"面积"<<x*y<<endl;
	}
	point operator , (point r)
	{
		point temp;
		temp.x=r.x;
		temp.y=r.y;
		return temp;
	}
	point operator+(point r)
	{
		point temp;
		temp.x=r.x+x;
		temp.y=r.y+y;
		return temp;
	}
};
void main()
{
	point r1(1,2),r2(3,4),r3(5,6);
	r1.disp();
	r2.disp();
	r3.disp();
	r1=(r1,r2+r3,r2);
	r1.disp();
}