#include <iostream>

using namespace std;
class Animal    //讲解员
{
public:
    Animal(){}
    virtual void perform(){cout << "=====" << endl;}
};
class Lion:public Animal    //狮子
{
public:
    Lion(){}
    void perform(){Animal::perform();cout << "动物:狮子" <<" 表演:跳火圈" << endl;}
};
class Elephant:public Animal    //大象
{
public:
    Elephant(){}
    void perform(){Animal::perform();cout << "动物:大象" <<" 表演:吹泡泡" << endl;}
};
class Monkey:public Animal    //猴子
{
public:
    Monkey(){}
    void perform(){Animal::perform();cout << "动物:猴子" <<" 表演:踩高跷" << endl;}
};
void fun(Animal &p)     //行为
{
    p.perform();
}
int main()
{
    Lion l1;
    Elephant e1;
    Monkey m1;
    fun(l1);
    fun(e1);
    fun(m1);
    return 0;
}