1 // 访问者模式.cpp : 定义控制台应用程序的入口点。  2 //  3   4 #include "stdafx.h"  5 #include<iostream>  6 #include<string>  7 #include<list>  8 using namespace std;  9 //被访问者类声明 10 class Person; 11 //访问者类声明 12 class Visiter ; 13 //public: 14     //virtual void print_sproter(Person *)=0; 15     //virtual void print_judgement(Person *)=0; 16  17 //被访问者抽象类 18 class Person 19 { 20 public: 21     Person(){} 22     virtual ~Person(){} 23     virtual string getname()=0; 24     virtual string getNo()=0; 25     virtual void accept(Visiter *)=0; 26 }; 27 //访问者抽象类 28 class Visiter  29 { 30 public: 31     Visiter(){} 32     virtual ~Visiter(){} 33     virtual void print_sproter(Person *)=0; 34     virtual void print_judgement(Person *)=0; 35 }; 36 //具体的被访问者1 37 class Sporter  :public Person 38 { 39 private: 40     string name;//姓名 41     string No;  //编号 42 public: 43     Sporter(string n,string N) 44     { 45         name=n; 46         No=N; 47     } 48     virtual~Sporter(){} 49     virtual void accept(Visiter *visiter) 50     { 51         visiter->print_sproter(this); 52     } 53     virtual string getname() 54     { 55         return name; 56     } 57     virtual string getNo() 58     { 59         return No; 60     } 61 }; 62 //具体的被访问者2 63 class Judgement  :public Person 64 { 65 private: 66     string name;//姓名 67 public: 68     Judgement(string n) 69     { 70         name=n; 71     } 72     virtual~Judgement(){} 73     virtual void accept(Visiter *visiter) 74     { 75         visiter->print_judgement(this); 76     } 77     virtual string getname() 78     { 79         return name; 80     } 81     virtual string getNo() 82     { 83         return 0; 84     } 85 }; 86  87 //具体的访问者类 88 class Concretevisitor:public Visiter 89 { 90 public: 91     Concretevisitor(){} 92     virtual ~Concretevisitor(){} 93     virtual void print_sproter(Person *people) 94     { 95         cout<<"运动员"<<endl; 96         cout<<"name:"<<people->getname()<<endl; 97         cout<<"No:"<<people->getNo()<<endl; 98     } 99     virtual void print_judgement(Person *people)100     {101         cout<<"裁判"<<endl;102         cout<<"name:"<<people->getname()<<endl;103     }104 };105 106 //被访问者的具体对象结构107 class Objectstructure108 {109 private:110     list<Person*> persons;111 public:112     Objectstructure(){}113     ~Objectstructure(){}114     void add(Person* people)115     {116         persons.push_back(people);117     }118     void remove(Person* people)119     {120         persons.remove(people);121     }122     void accept(Visiter* visiter)123     {124         list<Person*>::iterator it=persons.begin();125         for(;it!=persons.end();it++)126         {127             (*it)->accept(visiter);128         }129     }130 };131 132 int _tmain(int argc, _TCHAR* argv[])133 {134     Objectstructure* yundonghui=new Objectstructure();//新建一个运动会的对象结构135     Sporter * zhangsan=new Sporter("张三","0001");136     Sporter * lisi=new Sporter("李四","0002");137     Sporter * wangwu=new Sporter("王五","0003");138     Judgement* liu=new Judgement("刘裁判");139     yundonghui->add(zhangsan);140     yundonghui->add(lisi);141     yundonghui->add(wangwu);142     yundonghui->add(liu);143 144     Concretevisitor *notify=new Concretevisitor();145 146     cout<<"比赛即将开始，请下列运动员和裁判到检录台检录："<<endl;147     yundonghui->accept(notify);148     return 0;149 }