shiyan13_3.cpp

来自「为初学者提供的最佳的C++程序设计源程序库」· C++ 代码 · 共 43 行

//-----虚函数的多态性-----//
#include<iostream.h>
class BaseFly
{
public:
	virtual void Fly()
	{cout<<"\n----Class BaseFly::Fly()----\n";}
};
class BirdFly:public BaseFly
{
public:
	void Fly(){cout<<"\n----Class BirdFly::()----\n";}
};
class DragonFly:public BaseFly
{
public:
	void Fly(){cout<<"\n----Class DragonFly::()----\n";}
};
class PlaneFly:public BaseFly
{
public:
	void Fly(){cout<<"\n----Class PlaneFly::()----\n";}
};

int main()
{
	cout<<"\n 测试继承中的多态性(Virtual):\n";
	BaseFly *pBase;
	BirdFly *pBird=new BirdFly();
	pBase=pBird;
	cout<<"\nBirdFly->\n";
	pBase->Fly();
	DragonFly *pDragon=new DragonFly();
	pBase=pDragon;
	cout<<"\nDragonFly->\n";
	pBase->Fly();
	PlaneFly *pPlane=new PlaneFly();
	pBase=pPlane;
	cout<<"\nPlaneFly->\n";
	pBase->Fly();
	return 0;
}