从Point类继承的Circle类 代码参考

#include <iostream>
#include <cstring>

using namespace std;

class Point
{
    private:
        int x,y;
    public:
        Point(int,int);
        void SetPoint(int,int);
        int GetX(){return x;}
        int GetY(){return y;}
        void Print();
};

class Circle:public Point
{
    private:
        double radius;
    public:
        Circle(int,int,double);
        void SetRadius(double);
        double GetRadius();
        double Area();
        void Print();
};

void Point::SetPoint(int a, int b)
{
    x=a;
    y=b;
}

Point::Point(int a, int b)
{
    SetPoint(a,b);
}

void Point::Print()
{
    cout<<"["<<GetX()<<','<<GetY()<<"]"<<endl;
    return;
}

Circle::Circle(int a, int b, double r):Point(a,b)
{
    radius=r;
}

void Circle::SetRadius(double r)
{
    radius=r;
    return;
}

double Circle::GetRadius()
{
    return radius;
}

double Circle::Area()
{
    return 3.14*radius*radius;
}

void Circle::Print()
{
    cout<<"Circle c Center=";
    Point::Print();
    cout<<"Radius="<<radius<<endl;
    cout<<"The centre of circle c ";
    Point::Print();
    cout<<"The area of circle c "<<Area()<<endl;
    return;
}

int main()
{
    int x,y;
    int a,b,r;
    cin>>x>>y>>a>>b>>r;
    Point one(x,y);
    cout<<"Point p ";
    one.Print();
    Circle two(a,b,r);
    two.Print();
    return 0;
}