abstract.cc

来自「做为SD0609的一员,我扎实的基础是如何打出来的,来看看我那时连猴子选大王都不」· CC 代码 · 共 52 行

#include <iostream>
using namespace std;

class Animal{
	int age;
	int weight;
public:
	Animal():age(0),weight(0){}
	Animal(int a, int w):age(a),weight(w){}
	virtual void eat()=0;
	virtual void shout()=0;
};
class Dog : public Animal{
public:
	void eat()
	{
		cout << "dog eats bone" << endl;
	}
	void shout()
	{
		cout << "WangWang!!" << endl;
	}
};
class Pekinese : public Dog{
public:
	void shout()
	{
		cout << "Ao-------" << endl;
	}
};

void speak( Animal& a )
{
	a.shout();
}

int main(int argc, char* argv[])
{
	Animal* p=NULL;
	Dog od;
	Pekinese op;
	p = &od;
	p->shout();
	p = &op;
	p->shout();
	cout << "==============" << endl;
	speak( od );
	speak( op );
	return 0;
}