【单选题】有如下程序:#include <iostream>using namespace stdclass point{ int x, ypublic: point( int vx, int vy ) { x = vx y = vy } point ( ) x = 0 y= 0 } point operator+( point p1 ) { point p int px = x+ p1.x int py ...
【单选题】有如下程序: #include<iostream> using namespace std; class point { int x,y; public: point(int vx,int vy) { x=vx; y=vy; } point() { x=0; y=0; } point operator+(point p1) { point p; int px=x+p1.x; int py=y+p1...