c++编写点与圆的位置关系

#include<iostream>
 using namespace std;
class Point
 {
 private:
     int m_x;
     int m_y;
public:
     void setx(int x)
     {
         m_x = x;
     }
     void sety(int y)
     {
         m_y = y;
    }
     int Getx()
     {
         return m_x;
     }
     int Gety()
     {
        return m_y;
    }
 };
class Circle
 {
 private:
     int  m_r;
     Point m_center;
 public:
     void banjing(int r)
     {
         m_r = r;


     }
     int getbanjing()
     {
     return m_r;
     }
     void yuanxin(Point center)//设置圆心
     {
         m_center = center;


     }
     Point getyuanxin()
     {
         return m_center;
     }

 };
 int compare(Circle &c, Point &p)  //对比半径和距离平方和
 {
     int d; 
     d = (c.getyuanxin().Getx()-p.Getx())*(c.getyuanxin().Getx() - p.Getx()) +
         (c.getyuanxin().Gety() - p.Gety())*(c.getyuanxin().Gety() - p.Gety());
     int R;
     R = (c.getbanjing())*(c.getbanjing());
     if (d == R)
     {
         cout << "点在圆上" << endl;
     }
     if (d <= R)
     {
         cout << "点在圆内" << endl;
     }
     if (d >= R)
     {
         cout << "点在圆外" << endl;
     }
     return 0;
 }
int main() 
 {
     Circle c;
     c.banjing(10);
     Point center;
     center.setx(0);
     center.sety(0);
     c.yuanxin(center);
     Point p;
     p.setx(10);
     p.sety(10);
    compare(c,p);
     system("pause");
 }