proj11_08.cpp

来自「C++程序设计教程的全部源代码 包含与教程同步的PPT 方便学习」· C++ 代码 · 共 28 行

#include <iostream.h>
class CShape
{
public:	virtual void display() { cout << "Shape \n"; }
};
class CEllipse : public CShape
{
public:	virtual void display() { cout << "Ellipse \n"; }
};
class CCircle : public CEllipse
{
public:	virtual void display() { cout << "Circle \n"; }
};
class CTriangle : public CShape
{
public:	virtual void display() { cout << "Triangle \n"; }
};
void main()
{
	CShape     aShape;
	CEllipse   aEllipse;
	CCircle    aCircle;
	CTriangle  aTriangle;
	CShape* pShape[4] = { &aShape,	&aEllipse,
		&aCircle,&aTriangle,};	
	for (int i = 0; i< 4; i++)
		pShape[i]->display();
}