c++肉牛和奶牛

#include<iostream.h>

class niu
{
protected:
	int TiZhong;
	int ChanNaiLiang;
public:
	niu(int tz=0,int cnl=0)
	{
		TiZhong=tz;
		ChanNaiLiang=cnl;
	}

	int getTiZhong()
	{
		return TiZhong;
	}

	int getChanNaiLiang()
	{
		return ChanNaiLiang;
	}

	virtual bool IsGood()=0;
	virtual void showHG()=0;
	virtual void inputCNL()=0;
	virtual void inputTZ()=0;
};

class NaiNiu: public niu
{
public:
	NaiNiu(int cnl=0):niu(0,cnl)
	{
		inputCNL();
	}

	bool IsGood()
	{
		if(getChanNaiLiang()>10)
			return true;
		else
			return false;
	}

	void showHG()
	{
		if(IsGood())
			cout<<"奶牛合格"<<endl;
	}

	void inputCNL()
	{
		cout<<"请输入产奶量";
		cin>>ChanNaiLiang;
	}
	void inputTZ(){}
};

class RouNiu: public niu
{
public:
	RouNiu(int tz=0):niu(tz,0)
	{
		inputTZ();
	}

	bool IsGood()
	{
		if(getTiZhong()>1000)
			return true;
		else
			return false;
	}
	void showHG()
	{
		if(IsGood())
			cout<<"肉牛合格"<<endl;
	}
	void inputCNL(){}
	void inputTZ()
	{
		cout<<"请输入体重";
		cin>>TiZhong;
	}
};

void main()
{
	niu* p[100];///////
	int i=0;
	int cnt=0;
	int type=0;//0表示肉牛，1表示奶牛
	cout<<"请输入你想要的牛的数量";
	cin>>cnt;
	for(i=0;i<cnt;i++)
	{
		cout<<"请选择肉牛(0)，还是奶牛(1):";
		cin>>type;
		if(type==0)
			p[i]=new RouNiu();//////////
		else
			p[i]=new NaiNiu();//////////
	}
	for(i=0;i<cnt;i++)
	{
		p[i]->showHG();
		delete p[i];
	}
}