C++语言 对动物的行为实现多态

//#C++语言 对动物的行为实现多态
#include <iostream>
using namespace std;

class CAnimal
{
public:
virtual void Cry()=0;//纯虚函数
};

class CDog:public CAnimal
{
public:
virtual void Cry()
{
cout << "wang wang! The dog sound!\n" << endl;
}
};

class CCat:public CAnimal
{
public:
virtual void Cry()
{
cout << "miao miao! The cat sound!\n" << endl;
}
};

int main(int argc, char* argv[])
{
/*
CAnimal *p;
CDog cdog;
p = &cdog;
p->Cry();
CCat ccat;
p = &ccat;
p->Cry();
*/
CAnimal *animal;
animal = new CDog;
animal->Cry();
delete animal;
animal = new CCat;
animal->Cry();
delete animal;
return 0;
}