【c++程序】复杂抽象结构

来源：互联网发布：nosql数据库编辑：程序博客网时间：2024/05/24 04:29
#include<iostream>using namespace std;class Animal{public:Animal(int);virtual ~Animal(){cout<<"析构动物"<<endl;}virtual int GetAge(){return itsage;}virtual void Sleep()=0;virtual void Propagate()=0;virtual void Move()=0;virtual void Body()=0;virtual void Eat()=0;virtual void Show()=0;private:int itsage;};Animal::Animal(int age):itsage(age){cout<<"创建动物....."<<endl;}class Mammalia:public Animal{public:Mammalia(int age):Animal(age){cout<<"创建哺乳类....."<<endl;}virtual ~Mammalia(){cout<<"析构哺乳类...."<<endl;}virtual void Propagete(){cout<<"哺乳类是胎生动物，通过胚胎来繁殖后代"<<endl;}};class Brid:public Animal{public:Brid(int age):Animal(age){   cout<<"创建鸟类...."<<endl;}virtual ~Brid(){cout<<"析构鸟类....."<<endl;}virtual void Sleep(){cout<<"鸟类喜欢站着睡觉...."<<endl;}virtual void Eat(){cout<<"极个别动物喜欢吃肉，其他喜欢吃素...."<<endl;}virtual void Propagate(){cout<<"鸟类是卵生动物，通过排卵繁殖...."<<endl;}virtual void Move(){cout<<"鸟类可以飞...."<<endl;}virtual void Body(){cout<<"鸟类体表背赋羽毛...."<<endl;}virtual void Show(){cout<<"鸟类一般寿命"<<GetAge()<<endl;}};class Human:public Mammalia{public:Human(int age):Mammalia(age){cout<<"创建人类...."<<endl;}virtual ~Human(){cout<<"析构人类..."<<endl;}virtual void Sleep(){cout<<"人类在床上睡觉...."<<endl;}virtual void Eat(){cout<<"大多数人不吃生食...."<<endl;}virtual void Propagate(){cout<<"人类通过胚胎繁殖...."<<endl;}virtual void Move(){cout<<"人类可以走...."<<endl;}virtual void Body(){cout<<"人类体表无毛...."<<endl;}virtual void Show(){cout<<"人类一般寿命"<<GetAge()<<endl;}};class Pig:public Mammalia{public:Pig(int age):Mammalia(age){cout<<"创建猪类...."<<endl;}virtual ~Pig(){cout<<"析构猪类..."<<endl;}virtual void Sleep(){cout<<"猪类喜欢在烂泥中躺着睡觉...."<<endl;}virtual void Eat(){cout<<"猪是杂食动物...."<<endl;}virtual void Propagate(){cout<<"猪也通过胚胎繁殖...."<<endl;}virtual void Move(){cout<<"猪四条腿走路...."<<endl;}virtual void Body(){cout<<"猪体表被毛...."<<endl;}virtual void Show(){cout<<"猪因为要被人宰了吃，所以寿命为"<<GetAge()<<endl;}};int main(){Animal *p=0;int choice=0;bool quit=false;while(choice<4){cout<<"1-猪类2-人类3-鸟类0-退出"<<endl;cin>>choice;switch(choice){case 1:p=new Pig(1);break;case 2:p=new Human(80);break;case 3:p=new Brid(50);break;default:quit=true;break;}if(quit){break;}p->Show();p->Eat();p->Propagate();p->Move();p->Sleep();p->Body();cout<<endl;delete p;}}
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