算法之路二：刘汝佳算法竞赛入门经典：c++结构体

#include<iostream>using namespace std;struct Point{    int x,y;    Point(int x=0,int y=0):x(x),y(y){} //Point(int x=0,int y=0){this->x=x;this->y=y;} 构造函数 };Point operator + (const Point &A,const Point &B){    return Point(A.x+B.x,A.y+B.y);}ostream& operator <<(ostream &out,const Point &p){    out<<"("<<p.x<<","<<p.y<<")";    return out;}int main(){    Point a,b(1,2);    a.x=3;    cout<<a+b<<endl;    return 0;}