用C++运算符重载，实现点对象的+-运算 设计一个点类Point，实现点对象之间的+和-运算。 #include<iostream> using namespace std; 提供补充代码 int main() { Point p1,p2,psum,psub; int x,y; cin>>x>>y; p1.setP(x,y); cin>>x>>y; p2.setP(x,y); psum=p1+p2; psub=p1-p2; cout<<"两点相加："; psum.show(); cout<<"两点相减："; psub.show(); }

以下是完整的代码：

#include<iostream>
using namespace std;

class Point{
private:
int x, y;
public:
Point(int x=0, int y=0):x(x), y(y){} // 构造函数
Point operator+(const Point& p){ // 重载+运算符
return Point(x+p.x, y+p.y);
}
Point operator-(const Point& p){ // 重载-运算符
return Point(x-p.x, y-p.y);
}
void setP(int x, int y){ // 设置点坐标
this->x = x;
this->y = y;
}
void show(){ // 显示点的坐标
cout<<"("<<x<<","<<y<<")"<<endl;
}
};

int main() {
Point p1, p2, psum, psub;
int x, y;
cin>>x>>y;
p1.setP(x, y);
cin>>x>>y;
p2.setP(x, y);
psum = p1+p2;
psub = p1-p2;
cout<<"两点相加：";
psum.show();
cout<<"两点相减：";
psub.show();
return 0;
}