类的练习#include#includeusing namespace std;class point{protected:int X , Y;public:point(){X=0;Y=0;}point(int x,int y){X=x;Y=y;cout}void setp(int x,int y){X=x;Y=y;}int getX(){return X;}int getY(){return Y;}double disto(){return (sqrt(X*X+Y*Y));}double dist(point &p){int x;int y;x=X-p.X;y=Y-p.Y;return (sqrt(x*x+y*y));}void show(){cout}};int main(){point p1 , p2 , p3;int x , y;p1.setp(4,5);p1.show();coutp2.setp(1,1);coutreturn 0;}