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来自「C语言相关程序」· 代码 · 共 105 行

#include<iostream.h>
class point
{
	int x,y;
public:
	point()
	{
		x=y=0;
	}
	point (int i,int j)
	{
		x=i;
		y=j;
	}
	point (point &);
	~point(){}
	void offset(int,int);
	void offset(point);
	bool operator==(point);
	bool operator!=(point);
	void operator+=(point);
	void operator-=(point);
	point operator+(point);
	point operator-(point);
	int getx(){return x;}
	int gety(){return y;}
	void disp()
	{
		cout<<"("<<","<<")"<<endl;
	}
};
point::point(point &p)
{
	x=p.x;
	y=p.y;
}
void point::offset(int i,int j)
{
	x+=i;
	y+=j;
}
void point::offset(point p)
{
	x+=p.getx();
	y+=p.gety();
}
bool point::operator==(point p)
{
	if(x==p.getx()&&y==p.gety())
		return 1;
	else
		return 0;
}
bool point::operator!=(point p)
{
	if(x!=p.getx()||y!=p.gety())
		return 1;
	else
		return 0;
}
void point::operator+=(point p)
{
	x+=p.getx();
	y+=p.gety();
}
void point::operator-=(point p)
{
	x-=p.getx();
	y-=p.gety();
}
point point::operator+(point p)
{
	this->x+=p.x;
	this->y+=p.y;
	return *this;
}
point point::operator-(point p)
{
	this->x-=p.x;
	this->y-=p.y;
	return *this;
}
void main()
{
	point p1(2,3),p2(3,4),p3(p2);
	cout<<"1:";
	p3.disp();
	p3.offset(10,10);
	cout<<"2:";
	p3.disp();
	cout<<"3:"<<(p2==p3)<<endl;
	cout<<"4:"<<(p2!=p3)<<endl;
	p3+=p1;
	cout<<"5:";
	p3.disp();
	p3-=p2;
	cout<<"6:";
	p3.disp();
	p3=p1+p3;
	cout<<"7:";
	p3.disp();
	p3=p1-p2;
	cout<<"8:";
	p3.disp();
}