判点是否在圆内（C++）

#include<iostream>
using namespace std;

class Point
{
private:
	int m_x;
	int m_y;
public:
	void Set(int x, int y)
	{
		m_x = x;
		m_y = y;
	}
	int getx()
	{
		return m_x;
	}
	int gety()
	{
		return m_y;
	}
};
class Circle
{
private:
	int m_x1;
	int m_y1;
	int m_r;
public:
	void Set1(int x, int y, int r)
	{
		m_x1 = x;
		m_y1 = y;
		m_r = r;
	}
	int getx()
	{
		return m_x1;
	}
	int gety()
	{
		return m_y1;
	}
	int getr()
	{
		return m_r;
	}
public:
	int judge(Point &myp)
	{
		int d = (myp.getx() - m_x1)*(myp.getx() - m_x1) + (myp.gety() - m_y1)*(myp.gety() - m_y1);
		if (d <= (m_r*m_r))
		{
			return 1;//在圆内
		}
		else
		{
			return 0;//在圆外
		}
	}

};
int main()
{
	Circle c1;
	Point p;
	c1.Set1(1, 1, 3);
	p.Set(2,2);
	if (c1.judge(p) == 1)
	{
		cout << "点P在圆内"<< endl;
	}
	else if (c1.judge(p) == 0)
	{
		cout <<"点P在圆外" << endl;
	}
	system("pause");
}