void get()
{
cout << endl << "x坐标为：" << x;
cout << endl << "y坐标为：" << y;
}
virtual ~point(){};
private:
int x;
int y;
};
#endif
【说明】点的类定义与实现。
#ifndef circle_h
#define circle_h
#include "shape.h"
#include "point.h"
class circle : public shape
{
public:
void input()
{
