数据的共享与保护2

#include<iostream>
#include<cmath>
using namespace std;
class Point{
public:
Point(int x=0,int y=0):x(x),y(y){}
int getX(){return x;
}
int getY({retuen y;
})
friend float dist(const Point &p1,const Point &p2);
private:
int x,y;
};
float dist(const Point &p1,const Point &p2){
double x=p1.x-p2.x;
double y=p1.y-p2.y;
return static_cast<float>(sqrt(x*x+y*y));
}
int main()
{
const Point myp1(1,1),myp2(4,5);
cout<<"The distance is:";
cout<<dist(myp1,myp2)<<endl;
return 0;
}