下面是给出的基类Animal声明和main()函数。
1、根据给出的main()函数和运行结果的提示,设计出相关的各个类,注意观察运行结果,提取出每个类中需要的数据成员,并匹配上需要的成员函数。
代码
#include <iostream> 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 { protected: string name; char sex; public: Mouse(string n,char s):name(n),sex(s){} void cry() { cout<<"我叫"<<name<<",是一只"; if(sex=='f') cout<<"女"; else cout<<"男"; cout<<"老鼠,我的叫声是:吱吱吱!"<<endl; } }; class Cat:public Animal { protected: string name; 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; } }; class Dog:public Animal { protected: string name; public: Dog(string n):name(n){} void cry() { cout<<"我叫"<<name<<",是一条狗,我的叫声是:汪汪汪!"<<endl; } }; class Giraffe:public Animal { protected: string name; char sex; public: Giraffe(string n,char s):name(n),sex(s){} void cry() { cout<<"我叫"<<name<<",是"; if(sex=='m') cout<<"男"; else cout<<"女"; cout<<"长颈鹿,我的脖子太长,发不出声音来!"<<endl; } }; 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; }
原文地址:http://blog.csdn.net/blue_skyrim/article/details/46289785