/* * Copyright (c) 2013, 烟台大学计算机学院 * All rights reserved. * 作 者:马广明 * 完成日期:2014 年 5 月 27 日 * 版 本 号:v1.0 * 问题描述:动物这样叫 */ #include <iostream> using namespace std; class Animal { public: virtual void cry() const { cout<<"不知哪种动物,让我如何学叫?"<<endl; } }; class Mouse:public Animal { public: Mouse(string na,char se):name(na),sex(se) {} //~Mouse(); void cry() const { if(sex=='m') cout<<"我叫"<<name<<",是一只男老鼠,我的叫声是:吱吱吱!"<<endl; else if(sex=='f') cout<<"我叫"<<name<<",是一只女老鼠,我的叫声是:吱吱吱!"<<endl; } private: string name; char sex; }; class Cat:public Animal { public: Cat(string na):name(na) {} //~Cat(); void cry() const { 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 na):name(na) {} //~Dog(); void cry() const { cout<<"我叫"<<name<<",是一条狗,我的叫声是:汪汪汪!"<<endl; } private: string name; }; class Giraffe:public Animal { public: Giraffe(string na,char se):name(na),sex(se) {} //~Giraffe(); void cry() const { if(sex=='m') cout<<"我叫"<<name<<",是一只男长颈鹿,我的脖子太长,发不出声来!"<<endl; else if(sex=='f') cout<<"我叫"<<name<<",是一只女长颈鹿,我的脖子太长,发不出声来!"<<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; }
原文地址:http://blog.csdn.net/u012369134/article/details/27199475