1 #include <iostream>
2 #include <cstring>
3 using namespace std;
4
5 struct Student
6 {
7 int id;
8 string name;
9 Student* next;
10 };
11 void printNodeInfo(Student* node);
12 void release(Student* node);
13 int main()
14 {
15 Student* head;
16 Student* p1 = new Student;
17 Student* p2 = new Student;
18 Student* p3 = new Student;
19 p1 ->id = 1001;
20 p1 ->name = "zhangsan";
21 p2 ->id = 1002;
22 p2 ->name = "lisi";
23 p3 ->id = 1003;
24 p3 ->name = "wangwu";
25 head = p1;
26 p1 ->next = p2;
27 p2 ->next = p3;
28 p3 ->next = NULL;
29
30 p1 = p2 = p3 = NULL;
31 printNodeInfo(head);
32 //释放节点内存
33 release(head);
34
35 return 0;
36 }
37 void printNodeInfo(Student* node)
38 {
39 while(node != NULL)
40 {
41 cout << node ->id << " " << node ->name << endl;
42 node = node ->next;
43 }
44 }
45 //void release(Student* node)
46 //{
47 // if(node == NULL)
48 // {
49 // cout << "链表为空" << endl;
50 // }
51 // while(node != NULL)
52 // {
53 // Student* temp = node;
54 // node = node ->next;
55 // delete temp;
56 // cout << "节点内存清除成功" << endl;
57 // }
58 //}
59 //改进release方法
60 void release(Student* node)
61 {
62 //创建一个临时节点 用于删除上一个节点内存
63 Student* temp = NULL;
64 if(node == NULL)
65 {
66 cout << "链表为空\n";
67 }
68 else
69 {
70 while(node != NULL)
71 {
72 temp = node;
73 node = node ->next;
74 delete temp;
75 cout << "节点内存清除成功\n";
76 }
77 }
78 }
