第十三周--动物怎么叫（1）

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#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){};    virtual 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){}    virtual 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){}    virtual void cry()    {        cout<<"我叫"<<name<<",是一只狗， 我的叫声是:汪汪汪"<<endl;    }private:    string name;};class Giraffe:public Animal{public:    Giraffe(string n,char s):name(n),sex(s){}      virtual 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;}
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