type_suit.cpp

来自「ThinkingC++中文版」· C++ 代码 · 共 37 行

#include <afxwin.h>

class Circle{
private:
	CPoint center;
	int radius;
public:
	Circle(int x,int y,int radius1):center(x,y)
	{
		radius = radius1;
	}
};

class  CRectangle{
private:
	CPoint upperleft,lowerright;
public:
	CRectangle(CPoint point1,CPoint point2):upperleft(point1),lowerright(point2)
	{}
};


void fun(Circle a)//& *
{
}

void main()
{
	Circle c(100,100,50);
	CRectangle r(CPoint(10,20),CPoint(300,400));
//	fun(r);
//	fun(&r);
//	Circle* pc = &r;
	Circle* pc = (Circle*)&r;//语法正确，语义错误！！
}