十四周项目1

代码;

 

#include <iostream>
#include<string>
using namespace std;
class Animal{
public:
    virtual void cry(){

    cout<<"不知哪种动物，让我如何学叫？"<<endl;
    }
};
class Mouse:public Animal{
public:
    Mouse(string n,char s):name(n),sex(s){}
    void cry(){
    cout<<"我叫"<<name<<"，是一只"<<((sex=='m')?"男":"女")<<"老鼠，我的叫声是：吱吱吱"<<endl;
    }
private:
    string name;
    char sex;

};
class Cat:public Animal{
public:
    Cat(string n):name(n){}
    void cry(){
cout<<"我叫"<<name<<"，是一只猫，我的叫声是：喵喵喵"<<endl;
}
private:
    string name;
};
class Dog:public Animal{
public:
    Dog(string n):name(n){}
    void cry(){
cout<<"我叫"<<name<<"，是一只狗，我的叫声是：旺旺旺"<<endl;
}
private:
    string name;
};
class Giraffe:public Animal{
public:
    Giraffe(string n,char s):name(n),sex(s){}
    void cry(){
    cout<<"我叫"<<name<<"，是一只"<<((sex=='m')?"男":"女")<<"长颈鹿，我的脖子太长，发不出声音来"<<endl;
    }
private:
    string name;
    char sex;

};
int main()
{
    Animal *p;
    p=new Animal();
    p->cry();
    Mouse m1("Jerry",'m');
    p=&m1;
    p->cry();
    Mouse m2("Jemmy",'f');
    p=&m2;
    p->cry();
    Cat c1("Tom");
    p=&c1;
    p->cry();
    Dog d1("Droopy");
    p=&d1;
    p->cry();
    Giraffe g1("Gill",'m');
    p=&g1;
    p->cry();
    return 0;
}

运行结果：