#include <iostream>

using namespace std;

class Animal
{
public:
    Animal() {}
    virtual void perform()=0;
};

class Lion:public Animal
{
public:
    Lion() {}
    void perform()
    {
        cout << "狮子会吃小朋友！！！快跑！！！" << endl;
    }
};

class Elephant:public Animal
{
public:
    Elephant() {}
    void perform()
    {
        cout << "大象会用鼻子跳绳！！！" << endl;
    }
};

class Monkey:public Animal
{
public:
    Monkey() {}
    void perform()
    {
        cout << "猴子会撑杆跳，还会抢走你的包！！！" << endl;
    }
};

int main()
{
    Animal *a1;
    Lion p1;
    Elephant p2;
    Monkey p3;
    a1=&p1;
    a1->perform();
    a1=&p2;
    a1->perform();
    a1=&p3;
    a1->perform();
    return 0;
}