prog6.cpp

来自「C++语言程序设计题典」· C++ 代码 · 共 27 行

#include <iostream.h>
class Point
{
	int x,y;
public:
	Point(int x,int y) { Point::x=x;Point::y=y; }
	int getx() { return x; }
	int gety() { return y; }
};
class Circle:public Point
{
	int r;
public:
	Circle(int x,int y,int r):Point(x,y)
	{
		Circle::r=r;
	}
	int getr() { return r; }
};
void main()
{
	Circle c(4,5,3);
	Point *p=&c;
	cout << "圆半径:" << c.getr() << ",";
	cout << "圆心:(" << p->getx() << "," << p->gety() << ")" << endl;
}