#include <iostream>

using namespace std;
//定义动物类
class Animal
{
private:
    string name;
public:
    Animal(){}
    Animal(string name):name(name){}
    ~Animal(){}
    //定义虚函数
    virtual void perform()=0;
    //表演的节目
    void show()
    {
        cout << "Please enjoy the special performance of " << name << endl;
    }
};
//管理员
class Guide:public Animal
{
public:
    Guide(){}
    Guide(string name):Animal(name){}
};
//表演
class Perform:public Guide
{
public:
    Perform(){}
    Perform(string name):Guide(name){}
    //重写虚函数
    void perform()
    {
        Animal::show();
    }
};

int main()
{
    Perform a("elephants");
    Perform b("lions");
    Perform c("tigers");
    Perform d("crocodiles");
    Perform e("hippos");
    Perform f("camels");
    Perform g("peacocks");
    Guide *p;
    p=&a;
    p->perform();
    p=&b;
    p->perform();
    p=&c;
    p->perform();
    p=&d;
    p->perform();
    p=&e;
    p->perform();
    p=&f;
    p->perform();
    p=&g;
    p->perform();
    return 0;
}