链表栈类模板

 1 #include "stdafx.h"
 2 #include<iostream>
 3 using namespace std;
 4 template <typename Type>  class LinkStack;
 5 template <typename Type> 
 6 // 链表节点
 7 class ListNode{
 8 private:
 9     friend class LinkStack<Type>;
10     ListNode():p_next(NULL){}
11     ListNode(Type item , ListNode<Type>*next=NULL):data(item),p_next(next){}
12     ~ListNode(){
13         p_next=NULL;
14     }
15 private:
16     Type data;  // 节点数据
17     ListNode<Type>*p_next;  //下一个节点
18 };

 1 #include "ListNode.h"
 2 template <typename Type>
 3 class LinkStack{
 4 public:
 5     LinkStack():p_top(NULL){}
 6     ~LinkStack(){
 7         makeEmpty();
 8     }
 9 public:
10     void makeEmpty();   // 清空
11     bool push(Type item);  // 入栈
12     Type pop();  // 出栈
13     Type getTop();  // 获取栈首元素
14     void print();  // 打印
15     bool isEmpty(){   // 判空
16         return p_top==NULL; 
17     }
18 private:
19     ListNode<Type>*p_top;
20 };
21 template<typename Type>
22 void LinkStack<Type>::makeEmpty(){
23     ListNode<Type>*pdel;
24     while(p_top!=NULL){
25         pdel = p_top;
26         p_top = p_top->p_next;
27         delete pdel;
28     }
29 }
30 template <typename Type>
31 bool LinkStack<Type>::push(Type item){
32     ListNode<Type>*temp = new ListNode<Type>(item);
33     if(temp==NULL){
34         cout << "filed push item:"<<item<<endl;
35         return false;
36     }
37     temp->p_next = p_top;
38     p_top = temp;
39     return true;
40 }
41 template <typename Type>
42 Type LinkStack<Type>::pop(){
43     if(isEmpty()){
44         cout << "stack is empty , can‘t pop the element"<<endl;
45         exit(0);
46     }
47     ListNode<Type>*temp = p_top;
48     p_top = p_top->p_next;
49     Type item = temp->data;
50     delete temp;
51     return item;
52 }
53 
54 template <typename Type>
55 Type LinkStack<Type>::getTop(){
56     if(isEmpty()){
57         cout << "stack is empty"<<endl;
58         exit(0);
59     }
60     return p_top->data;
61 }
62 template <typename Type>
63 void LinkStack<Type>::print(){
64     if(isEmpty()){
65         cout << "stack is empty"<<endl;
66         exit(0);
67     }
68     ListNode<Type>*pmove = p_top;
69     cout << "stack";
70     while(pmove!=NULL){
71         cout << "->" << pmove->data;
72         pmove = pmove->p_next;
73     }
74     cout << endl << endl;
75 }