C++下实现同接口下多个类作为参数的调用和传参

  1 /*
  2          实现同接口下不同类的对象的转移
  3         定义类的接口
  4         定义多个继承该接口的类
  5         定义管理类，把接口当作类型，
  6         传入该接口下各种类的对象，进行操作
  7 */
  8 #include<iostream>
  9 #include<map>
 10 #include<cstdlib>
 11 using namespace std;
 12 template<typename keyType,typename valueType>
 13 struct Node{
 14     keyType key;
 15     valueType value;
 16     Node *next;
 17 };
 18 template<typename keyType,typename valueType>
 19 class List
 20 {
 21     public:
 22         List()
 23         {
 24             tail=accom=mallocmemory();//initialize head node
 25         }
 26         void Add(keyType key,valueType value){
 27             Node<keyType,valueType> *nd=mallocmemory();
 28             nd->key=key;
 29             nd->value=value;
 30             tail->next=nd;
 31             tail=tail->next;
 32         }
 33         valueType Get(keyType key,bool del=false)
 34         {
 35             Node<keyType,valueType> *record,*temp=accom->next;
 36             valueType t;
 37             while(temp!=NULL&&temp->key!=key)
 38             {
 39                 temp=temp->next;
 40             }
 41             t=temp->value;
 42             if(del)
 43             {
 44                 record=accom;
 45                 while(record->next!=temp)
 46                 record=record->next;
 47                 record=temp->next;
 48                 free(temp);
 49             }
 50             return t;
 51         }
 52         bool Exist(keyType key)
 53         {
 54             Node<keyType,valueType> *temp=accom->next;
 55             while(temp!=NULL&&temp->key!=key)
 56             {
 57                 temp=temp->next;
 58             }
 59             if(temp==NULL)
 60             return false;
 61             return true;
 62         }
 63         valueType RemoveById(keyType id)
 64         {
 65             return Get(id,true);
 66         }
 67     private:
 68         Node<keyType ,valueType> *mallocmemory(){
 69             Node<keyType,valueType> *nd=(Node<keyType,valueType>*)malloc(sizeof(Node<keyType,valueType>));
 70             nd->next=NULL;
 71             return nd;
 72         }
 73         Node<keyType,valueType> *accom,*tail;
 74 };
 75 class IPerson{
 76     public:
 77         virtual void SetName(string name)=0;
 78         virtual void SetAge(int age)=0;
 79         virtual void ShowInfo()=0;
 80 };
 81 class Student:public IPerson
 82 {
 83     public:
 84         void SetName(string name)
 85         {
 86             Name=name;
 87         }
 88         void SetAge(int age)
 89         {
 90             Age=age;
 91         }
 92         void ShowInfo()
 93         {
 94             cout<<"学生信息："<<endl;
 95             cout<<"\tName: "<<Name<<endl;
 96             cout<<"\tAge : "<<Age<<endl;
 97         }
 98     private:
 99         string Name;
100         int Age;
101 };
102 class Parent:public IPerson
103 {
104     public:
105         void SetName(string name)
106         {
107             Name=name;
108         }
109         void SetAge(int age)
110         {
111             Age=age;
112         }
113         void ShowInfo()
114         {
115             cout<<"家长信息："<<endl;
116             cout<<"\tName: "<<Name<<endl;
117             cout<<"\tAge : "<<Age<<endl;
118         }
119     private:
120         string Name;
121         int Age;
122 };
123 class Teacher:public IPerson
124 {
125     public:
126         void SetName(string name)
127         {
128             Name=name;
129         }
130         void SetAge(int age)
131         {
132             Age=age;
133         }
134         void ShowInfo()
135         {
136             cout<<"老师信息："<<endl;
137             cout<<"\tName: "<<Name<<endl;
138             cout<<"\tAge : "<<Age<<endl;
139         }
140     private:
141         string Name;
142         int Age;
143 };
144 class Manager{
145     public:
146         Manager()
147         {
148             curPer=NULL;
149         }
150         void SetName(string name)
151         {
152             curPer->SetName(name);
153         }
154         void SetAge(int age)
155         {
156             if(curPer==NULL)cout<<"农夫"<<endl;
157             else
158             curPer->SetAge(age);
159         }
160         void ShowInfo()
161         {
162             curPer->ShowInfo();
163         }
164         void AddPeople(int id,IPerson *person)
165         {
166             per.Add(id,person);
167         }
168         void ChangeState(int id)
169         {
170             if(per.Exist(id))
171             curPer=per.Get(id);
172             else
173             cout<<"没有找到这个栈"<<endl;
174         }
175     private:
176         List<int,IPerson*> per;
177         IPerson *curPer;
178 };
179 int main()
180 {
181     Parent one;
182     Student stu;
183     Teacher tea;
184     Manager manage;
185     manage.AddPeople(1,&one);
186     manage.AddPeople(2,&stu);
187     manage.AddPeople(3,&tea);
188
189     manage.ChangeState(1);
190     manage.SetAge(19);
191     manage.SetName("jiazhang");
192
193     manage.ChangeState(2);
194     manage.SetAge(22);
195     manage.SetName("xuesheng");
196
197     manage.ChangeState(3);
198     manage.SetAge(21);
199     manage.SetName("laoshi");
200     for(int i=3;i>0;i--) {
201     manage.ChangeState(i);
202     manage.ShowInfo();}
203
204     return 0;
205 }