#include <iostream>

using namespace std;

class Animal
{
private:
    string name;
public:
    Animal(){}
    Animal(string name):name(name)
    {

    }
    virtual void perform()
    {
        cout << "我是" << name <<endl;
    }
};

class Lion:public Animal
{
private:
    string Lion_name;
public:
    Lion(){}
    Lion(string Lion_name):Lion_name(Lion_name)
    {

    }
    void perform()
    {
        cout << "我是" << Lion_name << endl;
    }
};

class Monkey:public Animal
{
private:
    string Monkey_name;
public:
    Monkey(){}
    Monkey(string Monkey_name):Monkey_name(Monkey_name){}
    void perform()
    {
        cout << "我是" << Monkey_name << endl;
    }
};
int main()
{
    Animal a("讲解员");
    Animal *p = &a;
    p->perform();

    Lion l("辛巴");
    p = &l;
    p->perform();

    Monkey m("悟空");
    p = &m;
    p->perform();


    return 0;
}