- \n
- \u4e00\u3001\u7ed3\u6784\u4f53\u8be6\u89e3<\/li>\n
- \u4e8c\u3001\u94fe\u8868\u6838\u5fc3\u64cd\u4f5c<\/li>\n
- \u4e09\u3001\u603b\u7ed3<\/li>\n<\/ul>\n
\u4e00\u3001\u7ed3\u6784\u4f53\u8be6\u89e3<\/h3>\n
\u7ed3\u6784\u4f53\u662f\u4e00\u7c7b\u7279\u6b8a\u7684\u6570\u636e\u7c7b\u578b，\u76f8\u5f53\u4e8e\u4e00\u4e2a\u5b58\u50a8\u591a\u4e2a\u6570\u636e\u7684\u5305\u88f9，\u91cc\u9762\u5305\u542b\u5404\u79cd\u6211\u4eec\u6240\u9700\u7684\u6570\u636e，\u6bd4\u5982\u4e00\u4e2a\u63cf\u8ff0\u4eba\u7684\u7ed3\u6784\u4f53，\u91cc\u9762\u53ef\u80fd\u5305\u542b\u5e74\u9f84，\u8eab\u9ad8，\u5b66\u5386\u7b49\u6570\u636e，\u6bcf\u4e2a\u4eba\u7684\u6570\u636e\u90fd\u4e0d\u76f8\u540c，\u4f46\u90fd\u662f\u4e00\u6837\u7684\u6570\u636e\u7c7b\u578b\u3002<\/p>\n
\u6211\u4eec\u7528 struct \u6765\u5b9a\u4e49\u7ed3\u6784\u4f53\u8fd9\u79cd\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<\/p>\n
1.\u7ed3\u6784\u4f53\u7684\u8c03\u7528<\/p>\n
\u6211\u4eec\u8fd9\u91cc\u5b9a\u4e49\u4e00\u4e2a\u7ed3\u6784\u4f53<\/p>\n
struct person<\/p>\n
{<\/p>\n
int age;<\/p>\n
char name[20];<\/p>\n
};<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u6e05\u6670\u5730\u770b\u51fa\u8fd9\u4e2a\u7ed3\u6784\u4f53\u6240\u5305\u542b\u7684\u4fe1\u606f\u662f\u5e74\u9f84\u548c\u59d3\u540d，\u600e\u4e48\u8c03\u7528\u5b83\u5462？<\/p>\n
struct person p1;<\/p>\n
\u8fd9\u91cc\u6211\u4eec\u770b\u5230 struct person \u662f\u6211\u4eec\u6240\u5b9a\u4e49\u7684\u4e00\u4e2a\u7ed3\u6784\u4f53，\u540e\u9762\u662f\u6211\u4eec\u7ed3\u6784\u4f53\u7684\u4e00\u4e2a\u5bf9\u8c61，\u53ef\u4ee5\u7c7b\u6bd4\u4e3a int p，struct person \u76f8\u5f53\u4e8e int \u7684\u4f5c\u7528，p1 \u76f8\u5f53\u4e8e p，\u4e5f\u5c31\u662f\u53d8\u91cf\u540d\u3002\u90a3\u4e48\u600e\u4e48\u7ed9 p1 \u91cc\u9762\u7684\u5185\u5bb9\u8d4b\u503c\u5462？<\/p>\n
\u8fd9\u91cc\u6211\u4eec\u9700\u8981\u501f\u52a9\u4e00\u4e2a\u4e13\u7528\u7684\u8fd0\u7b97\u7b26\u2014\u2014\u70b9\u53f7（.），\u901a\u8fc7 p1.age=14 \u5373\u53ef\u5b8c\u6210\u8d4b\u503c\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f：\u7ed3\u6784\u4f53\u4e2d\u7684\u5b57\u7b26\u4e32\u4e0d\u80fd\u76f4\u63a5\u7528 = \u8d4b\u503c，\u5fc5\u987b\u501f\u52a9 strcpy \u51fd\u6570，\u4f8b\u5982 strcpy(p1.name, "\u5f20\u4e09")，\u5c06\u5b57\u7b26\u4e32\u590d\u5236\u5230\u6210\u5458\u4e2d\u3002<\/p>\n
\u8fd9\u91cc\u6211\u7ed9\u4e00\u4e2a\u5b8c\u6574\u7684\u4ee3\u7801\u793a\u4f8b：<\/p>\n<\/p>\n
#include <stdio.h>
\n#include <string.h><\/p>\n\/\/ \u5b9a\u4e49\u7ed3\u6784\u4f53
\nstruct person {
\n int age;
\n char name[20];
\n};<\/p>\nint main() {
\n \/\/ \u5148\u58f0\u660e\u7ed3\u6784\u4f53\u5bf9\u8c61
\n struct person p1;<\/p>\n\/\/ \u518d\u7ed9 p1 \u91cc\u9762\u7684\u5185\u5bb9\u8d4b\u503c
\n p1.age = 14;
\n strcpy(p1.name, "\u5f20\u4e09");<\/p>\n\/\/ \u6253\u5370\u7ed3\u6784\u4f53\u6210\u5458
\n printf("p1: \u5e74\u9f84=%d, \u59d3\u540d=%s\\\\n", p1.age, p1.name);<\/p>\nreturn 0;
\n} <\/p>\n\u5176\u5b9e\u7ed3\u6784\u4f53\u5c31\u7c7b\u4f3c\u4e8e\u4e00\u4e2a\u591a\u529f\u80fd\u7684\u6570\u7ec4，\u53ef\u4ee5\u5b58\u653e\u5404\u79cd\u6570\u636e\u3002<\/p>\n<\/p>\n
\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u597d\u50cf\u53ea\u6709 p1 \u81ea\u5df1\u624d\u80fd\u4fee\u6539\u5b83\u81ea\u5df1\u7684\u503c，\u5176\u4ed6\u7684\u90fd\u4e0d\u53ef\u4ee5，\u597d\u50cf\u6ca1\u6709\u5176\u4ed6\u65b9\u5f0f\u4e86，\u8fd9\u662f\u4e0d\u662f\u592a\u5c40\u9650\u4e86？<\/p>\n
\u6240\u4ee5\u8fd9\u91cc\u6211\u4eec\u5f15\u5165\u7ed3\u6784\u4f53\u6307\u9488，struct person *p2=&p1，p2 \u53ef\u76f4\u63a5\u6307\u5411 p1 \u7684\u5185\u5bb9，\u53ea\u4e0d\u8fc7\u8fd9\u91cc\u5e76\u4e0d\u662f\u7528"."\u4e86，\u800c\u662f\u7528"->"，\u6211\u4eec p2->age=18，p1.age \u7684\u5185\u5bb9\u4e5f\u5c31\u53d8\u6210\u4e86 18，\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6307\u9488\u6765\u6307\u5411\u8fd9\u4e2a\u7ed3\u6784\u4f53，\u4ece\u800c\u6765\u4fee\u6539\u5b83，\u6211\u4eec\u751a\u81f3\u53ef\u4ee5\u8bbe\u7f6e\u591a\u4e2a\u6307\u9488\u540c\u65f6\u6307\u5411\u5b83（\u53ea\u8981\u6211\u4eec\u9700\u8981），\u8fd9\u6837\u5c31\u89e3\u51b3\u4e86\u7ed3\u6784\u4f53\u503c\u7684\u7075\u6d3b\u6027\u95ee\u9898\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u94fe\u8868\u6838\u5fc3\u64cd\u4f5c<\/h3>\n
\u94fe\u8868\u662f\u4e00\u4e2a\u7279\u522b\u7684\u6570\u636e\u7ed3\u6784，\u662f\u6211\u4eec\u901a\u8fc7\u7ed3\u6784\u4f53\u6765\u5b9e\u73b0\u7684\u3002\u6211\u4eec\u8bb2\u8fc7\u7ed3\u6784\u4f53\u662f\u4e00\u4e2a\u53ef\u4ee5\u5b58\u50a8\u591a\u79cd\u6570\u636e\u7684\u5305\u88f9，\u4f46\u5982\u679c\u6211\u5728\u8fd9\u4e2a\u5305\u88f9\u91cc\u9762\u5b58\u7684\u662f\u6307\u9488，\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u6307\u9488\u627e\u5230\u5b83\u6240\u6307\u5411\u7684\u503c\u3002\u8fd9\u91cc\u5982\u679c\u6211\u4eec\u5b58\u7684\u53c8\u662f\u4e00\u4e2a\u7ed3\u6784\u4f53\u6307\u9488，\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7\u5b58\u4e00\u4e2a\u6307\u9488\u6765\u6307\u5411\u591a\u4e2a\u6570\u636e\u3002\u6211\u4eec\u53ef\u4ee5\u521d\u59cb\u5316\u4e00\u4e2a\u7ed3\u6784\u4f53，\u8ba9\u5b83\u4e00\u5f00\u59cb\u7684\u6570\u636e\u7c7b\u578b\u5c31\u6709\u4e00\u4e2a\u7ed3\u6784\u4f53\u6307\u9488\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260809075645-6a7832bd3877c.png\")
<\/p>\n\u8fd9\u91cc\u7684 next \u5c31\u662f\u4e00\u4e2a\u7ed3\u6784\u4f53\u6307\u9488，\u5b83\u6240\u6307\u5411\u7684\u5730\u5740\u5c31\u662f\u4e0b\u4e00\u4e2a\u7ed3\u6784\u4f53\u7684\u5730\u5740\u3002\u8fd9\u91cc\u6211\u4e3a\u65b9\u4fbf\u7406\u89e3\u628a\u8fd9\u4e2a\u5730\u5740\u4e13\u95e8\u753b\u51fa\u6765\u4e86，\u5b9e\u9645\u8fc7\u7a0b\u4e2d\u8fd9\u4e2a\u6846\u662f\u4e0d\u5b58\u5728\u7684\u3002<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u6307\u9488，\u6765\u8bbe\u7f6e\u591a\u4e2a\u7ed3\u6784\u4f53\u8fde\u63a5\u5728\u4e00\u8d77\u7684\u6570\u636e\u7ed3\u6784，\u8fd9\u4e2a\u5c31\u662f\u94fe\u8868\u3002<\/p>\n
\u5177\u4f53\u4ee3\u7801\u5b9e\u73b0（\u90e8\u5206）：<\/p>\n
#include <stdio.h>
\n#include <stdlib.h><\/p>\n\/\/ \u5b9a\u4e49\u94fe\u8868\u8282\u70b9\u7ed3\u6784\u4f53
\nstruct Node {
\n int data; \/\/ \u6570\u636e\u57df
\n struct Node *next; \/\/ \u6307\u9488\u57df，\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9
\n};<\/p>\n\/\/ \u521b\u5efa\u65b0\u8282\u70b9
\nstruct Node* createNode(int value) {
\n struct Node *newNode = (struct Node*)malloc(sizeof(struct Node));
\n newNode->data = value;
\n newNode->next = NULL;
\n return newNode;
\n} <\/p>\n\u6211\u7c97\u7565\u5730\u8bb2\u4e00\u4e0b\u8fd9\u4e2a\u51fd\u6570\u7684\u5b9e\u73b0，\u8fd9\u4e2a\u51fd\u6570\u662f\u4e00\u4e2a\u8fd4\u56de\u7c7b\u578b\u4e3a\u7ed3\u6784\u4f53\u6307\u9488\u7684\u51fd\u6570，\u6211\u4eec\u4f20\u5165\u6211\u4eec\u7ed9\u5b83\u7684\u6570\u636e（\u8fd9\u91cc\u662f value），\u7136\u540e\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u540d\u53eb newNode \u7684\u7ed3\u6784\u4f53\u6307\u9488，\u56e0\u4e3a\u5b83\u6240\u6307\u5411\u7684\u662f\u4e00\u4e2a\u5730\u5740，\u4f46\u662f\u8fd9\u4e2a\u5730\u5740\u73b0\u5728\u662f\u6ca1\u6709\u7a7a\u95f4\u7684（\u6ca1\u6709\u7a7a\u95f4\u5c31\u4ee3\u8868\u6ca1\u6709\u4e00\u5757\u8fde\u7eed\u7684\u5730\u5740，\u5c31\u65e0\u6cd5\u5b58\u653e\u6570\u636e），\u6211\u4eec\u8981\u7ed9\u5b83\u521b\u9020\u4e00\u4e2a\u7a7a\u95f4，\u5c31\u662f malloc，\u7a7a\u95f4\u7684\u5927\u5c0f\u662f sizeof \u8fd9\u4e2a\u7ed3\u6784\u4f53，\u8fd9\u4e2a\u7ed3\u6784\u4f53\u591a\u5927，\u6211\u4eec\u5f00\u8f9f\u591a\u5c11\u7a7a\u95f4，\u6240\u4ee5\u8fd9\u4e2a\u6307\u9488\u5c31\u6709\u4e86\u7a7a\u95f4，\u624d\u80fd\u8fdb\u884c\u540e\u7eed\u7684\u8d4b\u503c\u64cd\u4f5c，\u540e\u9762\u6211\u4eec\u628a\u8fd9\u4e2a\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488\u8fdb\u884c\u521d\u59cb\u5316，\u8ba9\u5b83\u7b49\u4e8e NULL（\u8fd9\u4e2a\u6211\u4eec\u540e\u7eed\u6709\u975e\u5e38\u5927\u7528），\u8fd9\u6837\u4e00\u4e2a\u8282\u70b9\u5c31\u987a\u5229\u5730\u521b\u5efa\u6210\u529f\u4e86\u3002<\/p>\n
（\u8fd9\u91cc\u4e3a\u4ec0\u4e48 newNode \u4e00\u5b9a\u8981\u662f\u7ed3\u6784\u4f53\u6307\u9488，\u800c\u4e0d\u662f\u7ed3\u6784\u4f53，\u662f\u56e0\u4e3a malloc \u5f00\u8f9f\u7684\u7a7a\u95f4\u662f\u5806\u7a7a\u95f4\u91cc\u9762\u7684，\u4e0d\u4f1a\u968f\u51fd\u6570\u7684\u7ed3\u675f\u800c\u91ca\u653e\u6389，\u7ed3\u6784\u4f53\u5176\u5b9e\u4e5f\u5c31\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u6570\u636e\u7c7b\u578b，\u4e5f\u662f\u5b58\u653e\u5728\u6808\u7a7a\u95f4\u91cc\u9762\u7684，\u6808\u4e0e\u5806\u7684\u533a\u522b\u53ef\u53c2\u8003\u6211\u4e0a\u4e00\u7bc7\u6587\u7ae0）<\/p>\n<\/p>\n
\u8fd9\u91cc\u6211\u4eec\u786e\u5b9e\u521b\u5efa\u4e86\u4e00\u4e2a\u8282\u70b9，\u4f46\u662f\u8fd9\u4e2a\u94fe\u8868\u5e76\u6ca1\u6709\u8fde\u63a5\u8d77\u6765，\u8fd9\u91cc\u6211\u4eec\u8fd8\u9700\u8981\u4e00\u4e2a\u51fd\u6570\u8fdb\u884c\u8fde\u63a5\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u4e0a\u4e00\u4e2a\u8282\u70b9\u7684 next \u6307\u9488，\u8ba9\u5b83\u6307\u5411\u65b0\u521b\u5efa\u7684\u8282\u70b9，\u4ece\u800c\u628a\u4e24\u4e2a\u8282\u70b9\u4e32\u8054\u8d77\u6765\u3002\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e2a\u5728\u94fe\u8868\u5c3e\u90e8\u63d2\u5165\u8282\u70b9\u7684\u51fd\u6570：<\/p>\n
\/\/ \u5728\u94fe\u8868\u5c3e\u90e8\u63d2\u5165\u8282\u70b9
\nvoid insertAtTail(struct Node **head, int value) {
\n struct Node *newNode = createNode(value);<\/p>\n\/\/ \u5982\u679c\u94fe\u8868\u4e3a\u7a7a，\u65b0\u8282\u70b9\u5c31\u662f\u5934\u8282\u70b9
\n if (*head == NULL) {
\n *head = newNode;
\n return;
\n }<\/p>\n\/\/ \u5426\u5219\u904d\u5386\u5230\u94fe\u8868\u672b\u5c3e，\u628a\u6700\u540e\u4e00\u4e2a\u8282\u70b9\u7684 next \u6307\u5411\u65b0\u8282\u70b9
\n struct Node *current = *head;
\n while (current->next != NULL) {
\n current = current->next;
\n }
\n current->next = newNode;
\n} <\/p>\n\u8fd9\u4e2a\u51fd\u6570\u6211\u6765\u9010\u884c\u89e3\u8bfb：<\/p>\n
1.\u6211\u4eec\u5148\u521b\u5efa\u4e00\u4e2a\u7ed3\u6784\u4f53\u6307\u9488\u6765\u5b58\u653e\u6211\u4eec\u6240\u521b\u5efa\u7684\u7ed3\u6784\u4f53\u7684\u5730\u5740\u3002<\/p>\n
2.\u60f3\u8981\u7406\u89e3\u8fd9\u4e2a if，\u6211\u4eec\u5148\u8bb2\u4e00\u4e0b\u8fd9\u4e2a\u4f20\u5165\u7684\u53c2\u6570 head\u3002\u6211\u4eec\u77e5\u9053\u4e00\u4e2a\u6570\u636e\u6709\u5730\u5740，\u6211\u4eec\u5c31\u53ef\u4ee5\u7528\u6307\u9488\u5b58\u653e\u5176\u5730\u5740，\u4f46\u662f\u6307\u9488\u4e5f\u662f\u4e00\u79cd\u6570\u636e\u7c7b\u578b，\u5b83\u4e5f\u6709\u5730\u5740，\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u7528\u4e8c\u7ea7\u6307\u9488（**）\u8868\u793a\u8fd9\u4e2a\u6307\u9488\u7684\u5730\u5740，\u4f8b\u5982：<\/p>\n
int a=5;<\/p>\n
（int *）p=&a;<\/p>\n
（int **）pp=&p;<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u76f4\u89c2\u5730\u7406\u89e3：\u5728\u8c03\u7528\u51fd\u6570\u65f6，\u6211\u4eec\u4f20\u5165\u7684\u53c2\u6570\u548c\u51fd\u6570\u7684\u53c2\u6570\u662f\u7b80\u5355\u7684\u8d4b\u503c，\u4f60\u5bf9\u8fd9\u4e2a\u51fd\u6570\u7684\u53c2\u6570\u505a\u4ec0\u4e48\u90fd\u5f71\u54cd\u4e0d\u4e86\u4f20\u5165\u7684\u53c2\u6570\u3002\u4f46\u662f\u6211\u4eec\u6539\u4e00\u4e0b，\u628a\u8fd9\u4e2a\u53c2\u6570\u7684\u5730\u5740\u4f20\u5165\u5230\u8fd9\u4e2a\u51fd\u6570\u91cc\u9762，\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7 * \u89e3\u5f15\u7528\u6765\u6539\u53d8\u8fd9\u4e2a\u53c2\u6570\u7684\u503c\u3002\u4e8c\u7ea7\u6307\u9488\u5c31\u662f，\u6211\u539f\u672c\u8981\u4f20\u5165\u7684\u53c2\u6570\u5c31\u662f\u4e00\u4e2a\u5730\u5740，\u4f46\u662f\u6211\u540c\u65f6\u4e5f\u8981\u6539\u53d8\u8fd9\u4e2a\u53c2\u6570，\u6211\u4eec\u5c31\u50cf\u4e0a\u9762\u4e00\u6837，\u5c31\u4f20\u5165\u8fd9\u4e2a\u53c2\u6570（\u8fd9\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u5730\u5740）\u7684\u5730\u5740，\u8fd9\u4e2a\u5c31\u662f\u6211\u4eec\u7684 head\u3002<\/p>\n
\u8fd9\u4e2a if \u91cc\u9762\u7684\u903b\u8f91\u5c31\u662f：\u6211\u4eec\u60f3\u6539\u53d8\u7684\u53c2\u6570\u5982\u679c\u5b83\u7684\u503c\u662f\u7a7a\u7684，\u6211\u4eec\u5c31\u7ed9\u5b83\u8d4b\u503c，\u628a\u6211\u4eec\u521b\u5efa\u7684\u8282\u70b9\u7684\u5730\u5740\u7ed9\u5b83\u3002\u8fd9\u91cc\u5c31\u662f\u4e3a\u4ec0\u4e48\u8981\u4f20\u5165\u4e8c\u7ea7\u6307\u9488，\u56e0\u4e3a\u5f53\u8282\u70b9\u662f\u7a7a\u7684\u65f6\u5019，\u6211\u4eec\u8981\u628a\u8fd9\u4e2a\u7a7a\u8282\u70b9\u7ed9\u66ff\u6362\u6389\u3002\u6211\u8fd9\u91cc\u8981\u6539\u53d8\u8fd9\u4e2a\u4e00\u7ea7\u6307\u9488，\u6240\u4ee5\u4f20\u5165\u7684\u53c2\u6570\u5fc5\u987b\u662f\u4e8c\u7ea7\u6307\u9488\u3002<\/p>\n<\/p>\n
3.\u5982\u679c\u8fd9\u4e2a\u5934\u8282\u70b9\u4e0d\u4e3a\u7a7a\u5462，\u6211\u4eec\u5c31\u8981\u627e\u5230\u8fd9\u4e2a\u94fe\u8868\u7684\u5c3e\u8282\u70b9，\u5728\u5c3e\u8282\u70b9\u5904，\u8ba9\u5c3e\u8282\u70b9\u7684 next \u6307\u5411\u6211\u4eec\u8fd9\u4e2a\u65b0\u521b\u5efa\u7684\u8282\u70b9\u3002<\/p>\n
\u6211\u4eec\u8fd9\u91cc\u53d1\u73b0\u540e\u7eed\u6211\u8981\u66f4\u6539\u7684\u4e1c\u897f\u53ea\u662f\u7ed3\u6784\u4f53\u91cc\u9762\u7684\u4e1c\u897f，\u5e76\u4e0d\u662f\u8fd9\u4e2a\u7ed3\u6784\u4f53\u7684\u5730\u5740\u4e86，\u6240\u4ee5\u540e\u7eed\u6211\u4eec\u5c31\u7528\u4e0d\u7740\u4e8c\u7ea7\u6307\u9488\u4e86，\u4e3a\u4e86\u65b9\u4fbf\u6211\u4eec\u5c31\u7528\u4e00\u4e2a\u4e00\u7ea7\u6307\u9488\u6307\u5411\u8fd9\u4e2a *head，\u6211\u4eec\u77e5\u9053\u5c3e\u8282\u70b9\u7684 next \u662f NULL（\u8fd9\u91cc\u5c31\u662f\u4e3a\u4ec0\u4e48\u6211\u4eec\u8981\u521d\u59cb\u5316 next \u4e3a NULL，\u56e0\u4e3a\u4e0d\u662f\u5c3e\u8282\u70b9\u7684\u5176\u4ed6\u8282\u70b9\u7684 next \u5df2\u7ecf\u6307\u5411\u4e0b\u4e00\u8282\u70b9\u4e86\u800c\u975e NULL）\u3002<\/p>\n
while \u5faa\u73af\u91cc\u9762\u5982\u679c next \u4e0d\u662f\u7a7a，\u6211\u4eec\u5c31\u8df3\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9，\u76f4\u5230\u4e3a\u7a7a，\u6211\u4eec\u5728\u7a7a\u8fd9\u91cc\u8ba9 next \u6307\u5411\u6211\u4eec\u6240\u521b\u5efa\u7684\u65b0\u8282\u70b9\u3002\u8fd9\u91cc\u6211\u4eec\u662f\u7528 while \u5faa\u73af\u627e\u5230\u7684 NULL，\u6211\u4eec\u5176\u5b9e\u8fd8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u6307\u9488，\u4e13\u95e8\u6307\u5411\u5c3e\u90e8，\u6bcf\u6b21\u521b\u5efa\u8282\u70b9\u65f6\u76f4\u63a5\u8ba9\u8fd9\u4e2a\u6307\u9488\u7684 next \u6307\u5411\u65b0\u8282\u70b9，\u7136\u540e\u66f4\u65b0\u8fd9\u4e2a\u6307\u9488，\u8fd9\u6837\u65f6\u95f4\u590d\u6742\u5ea6\u5c31\u53ef\u4ee5\u964d\u5230 O(1)\u3002<\/p>\n
\u8fd9\u6837\u4e00\u4e2a\u94fe\u8868\u7684\u521b\u5efa\u51fd\u6570\u5c31\u6210\u529f\u4e86，\u5982\u679c\u719f\u7ec3\u7684\u8bdd，\u6211\u4eec\u53ef\u4ee5\u628a\u8fd9\u4e24\u4e2a\u51fd\u6570\u5408\u5e76\u4e3a\u4e00\u4e2a\u3002<\/p>\n
\u8fd9\u5c31\u662f\u6211\u4eec\u5e38\u7528\u7684\u5c3e\u63d2，\u8fd8\u6709\u5934\u63d2（\u8fd9\u4e2a\u81ea\u884c\u4e86\u89e3，\u539f\u7406\u5f88\u7b80\u5355）\u3002<\/p>\n<\/p>\n
\u5220\u9664\u4e0e\u94fe\u8868\u6574\u4f53 free<\/p>\n
1.\u94fe\u8868\u6709\u589e\u52a0\u4e5f\u6709\u94fe\u8868\u7684\u5220\u9664，\u7406\u89e3\u4e86\u94fe\u8868\u7684\u589e\u52a0，\u5927\u5bb6\u4e5f\u731c\u5f97\u51fa\u6765\u94fe\u8868\u7684\u5220\u9664\u662f\u4ec0\u4e48\u6d41\u7a0b\u3002\u5927\u81f4\u662f\u8ba9\u5b83\u7684\u524d\u4e00\u4e2a\u8282\u70b9\u7684 next \u6307\u5411\u8df3\u8fc7\u8fd9\u4e2a\u8282\u70b9，\u6307\u5411\u8fd9\u4e2a\u8282\u70b9\u7684\u540e\u65b9（\u4f46\u8981\u6ce8\u610f\u8fd9\u4e2a\u8282\u70b9\u662f\u5426\u6709\u524d\u4e00\u4e2a\u8282\u70b9，\u56e0\u4e3a\u6211\u8fd9\u91cc\u662f\u5934\u8282\u70b9\u5b58\u4e86\u503c\u7684，\u6240\u4ee5\u8981\u6ce8\u610f\u8fd9\u4e2a，\u6211\u4eec\u91c7\u7528\u5934\u8282\u70b9\u5355\u7eaf\u4e3a\u7a7a\u3001\u4e0d\u5b58\u503c\u7684\u65f6\u5019\u5c31\u4e0d\u7528\u62c5\u5fc3\u8fd9\u4e2a）\u3002\u4f46\u662f\u8fd9\u4e2a\u8282\u70b9\u53ea\u662f\u7b80\u5355\u5730\u8df3\u8fc7\u53ef\u4e0d\u884c，\u6211\u4eec\u8282\u70b9\u90fd\u662f malloc \u521b\u5efa\u7684，\u5b83\u5b58\u653e\u5728\u5806\u7a7a\u95f4\u5185，\u6211\u4eec\u8981\u5bf9\u5b83\u8fdb\u884c\u624b\u52a8\u7684\u91ca\u653e，\u4e0d\u7136\u5c31\u4f1a\u51fa\u73b0\u5185\u5b58\u6cc4\u6f0f，\u8fd9\u662f\u4e00\u4e2a\u548c\u589e\u52a0\u4e0d\u540c\u7684\u91cd\u70b9\u533a\u522b\u3002\u4e0b\u9762\u6211\u7ed9\u4e00\u4e2a\u94fe\u8868\u5c3e\u8282\u70b9\u7684\u5220\u9664\u793a\u4f8b：<\/p>\n
\/\/ \u5220\u9664\u94fe\u8868\u5c3e\u8282\u70b9
\nvoid deleteTail(struct Node **head) {
\n \/\/ \u94fe\u8868\u4e3a\u7a7a，\u76f4\u63a5\u8fd4\u56de
\n if (*head == NULL) {
\n return;
\n }<\/p>\n\/\/ \u5982\u679c\u53ea\u6709\u4e00\u4e2a\u8282\u70b9，\u5220\u9664\u540e\u94fe\u8868\u4e3a\u7a7a
\n if ((*head)->next == NULL) {
\n free(*head);
\n *head = NULL;
\n return;
\n }<\/p>\n\/\/ \u627e\u5230\u5012\u6570\u7b2c\u4e8c\u4e2a\u8282\u70b9
\n struct Node *current = *head;
\n while (current->next->next != NULL) {
\n current = current->next;
\n }<\/p>\n\/\/ \u91ca\u653e\u5c3e\u8282\u70b9，\u5e76\u628a\u5012\u6570\u7b2c\u4e8c\u4e2a\u8282\u70b9\u7684 next \u7f6e\u7a7a
\n free(current->next);
\n current->next = NULL;
\n} <\/p>\n\u8fd9\u4e2a\u51fd\u6570\u540c\u6837\u9700\u8981\u4f20\u5165\u4e8c\u7ea7\u6307\u9488 head，\u56e0\u4e3a\u5f53\u94fe\u8868\u53ea\u6709\u4e00\u4e2a\u8282\u70b9\u65f6，\u5220\u9664\u540e\u5934\u6307\u9488\u672c\u8eab\u8981\u53d8\u6210 NULL，\u8fd9\u9700\u8981\u4fee\u6539\u4e00\u7ea7\u6307\u9488\u672c\u8eab\u3002\u51fd\u6570\u5148\u5224\u65ad\u94fe\u8868\u662f\u5426\u4e3a\u7a7a，\u4e3a\u7a7a\u76f4\u63a5\u8fd4\u56de；\u518d\u5224\u65ad\u662f\u5426\u53ea\u6709\u4e00\u4e2a\u8282\u70b9，\u5982\u679c\u662f\u5c31\u91ca\u653e\u8be5\u8282\u70b9\u5e76\u628a\u5934\u6307\u9488\u7f6e\u7a7a；\u5426\u5219\u4ece\u5934\u904d\u5386，\u627e\u5230\u5012\u6570\u7b2c\u4e8c\u4e2a\u8282\u70b9（\u5373 next \u7684 next \u4e3a NULL \u7684\u8282\u70b9），\u91ca\u653e\u5b83\u7684 next \u6307\u5411\u7684\u5c3e\u8282\u70b9，\u518d\u628a\u5b83\u7684 next \u7f6e\u4e3a NULL，\u8fd9\u6837\u5c3e\u8282\u70b9\u5c31\u88ab\u6b63\u786e\u5220\u9664\u5e76\u91ca\u653e\u4e86\u3002<\/p>\n
2.\u94fe\u8868\u8c03\u7528\u7ed3\u675f\u540e，\u6211\u4eec\u9700\u8981\u624b\u52a8\u5bf9\u8fd9\u4e2a\u94fe\u8868\u8fdb\u884c\u91ca\u653e，\u907f\u514d\u51fa\u73b0\u5185\u5b58\u6cc4\u6f0f\u3002\u8fd9\u4e2a\u6a21\u677f\u5dee\u4e0d\u591a\u5927\u591a\u6570\u94fe\u8868\u90fd\u662f\u5927\u5dee\u4e0d\u5dee\u7684，\u53ef\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u8fdb\u884c\u66f4\u6539，\u4ee3\u7801\u5982\u4e0b：<\/p>\n
\/\/ \u91ca\u653e\u6574\u4e2a\u94fe\u8868
\nvoid freeList(struct Node *head) {
\n struct Node *current = head;
\n while (current != NULL) {
\n struct Node *next = current->next; \/\/ \u5148\u4fdd\u5b58\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u5730\u5740
\n free(current); \/\/ \u91ca\u653e\u5f53\u524d\u8282\u70b9
\n current = next; \/\/ \u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9
\n }
\n} <\/p>\n\u8fd9\u4e2a\u51fd\u6570\u53ea\u9700\u8981\u4f20\u5165\u4e00\u7ea7\u6307\u9488 head \u5373\u53ef，\u56e0\u4e3a\u6211\u4eec\u53ea\u662f\u9010\u4e2a\u91ca\u653e\u8282\u70b9，\u5e76\u4e0d\u9700\u8981\u4fee\u6539\u5934\u6307\u9488\u672c\u8eab\u3002\u51fd\u6570\u7528\u4e00\u4e2a current \u6307\u9488\u4ece\u5934\u5f00\u59cb\u904d\u5386，\u6bcf\u6b21\u5148\u4fdd\u5b58\u5f53\u524d\u8282\u70b9\u7684\u4e0b\u4e00\u4e2a\u8282\u70b9\u5730\u5740（\u56e0\u4e3a\u91ca\u653e\u5f53\u524d\u8282\u70b9\u540e，\u5b83\u7684 next \u5c31\u4e0d\u53ef\u7528\u4e86），\u518d\u91ca\u653e\u5f53\u524d\u8282\u70b9，\u7136\u540e\u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9，\u76f4\u5230\u94fe\u8868\u672b\u5c3e\u3002\u8fd9\u6837\u6bcf\u4e2a malloc \u521b\u5efa\u7684\u8282\u70b9\u90fd\u88ab\u6b63\u786e\u91ca\u653e，\u4e0d\u4f1a\u9020\u6210\u5185\u5b58\u6cc4\u6f0f\u3002（\u8fd9\u91cc\u6211\u5e76\u6ca1\u6709\u52a0\u4e0a head=NULL，\u56e0\u4e3a\u8fd9\u91cc\u4e5f\u8bb8\u5f88\u591a\u4eba\u7684\u9700\u6c42\u4e0d\u540c，\u4f46\u8981\u6ce8\u610f\u907f\u514d\u51fa\u73b0\u91ce\u6307\u9488）<\/p>\n<\/p>\n
\u53cc\u5411\u94fe\u8868\u4e0e\u5faa\u73af\u94fe\u8868\u4ee5\u53ca\u5feb\u6162\u6307\u9488<\/p>\n
1.\u53cc\u5411\u94fe\u8868，\u6211\u4eec\u53d1\u73b0\u8fd9\u4e2a\u521b\u5efa\u7684\u94fe\u8868\u91cc\u9762\u4f3c\u4e4e\u53ef\u4ee5\u5b58\u4e0d\u6b62\u4e00\u4e2a\u6307\u9488，next \u662f\u5b58\u7684\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u5730\u5740，\u6211\u4eec\u662f\u4e0d\u662f\u53ef\u4ee5\u4e5f\u8bbe\u7f6e\u4e00\u4e2a\u540d\u4e3a last \u7684\u6307\u9488\u5b58\u653e\u4e0a\u4e00\u4e2a\u8282\u70b9\u7684\u5730\u5740，\u8fd9\u6837\u8fd9\u4e2a\u94fe\u8868\u5c31\u662f\u53cc\u5411\u7684\u4e86，\u5177\u4f53\u7684\u5b9e\u73b0\u6211\u5c31\u4e0d\u5199\u51fa\u6765\u4e86，\u9700\u8981\u5177\u4f53\u4e86\u89e3\u7684，\u53ef\u4ee5\u76f4\u63a5\u5c1d\u8bd5\u5199\u4e00\u4e0b，\u6216\u8005\u770b AI \u7ed9\u7684\u4ee3\u7801\u3002<\/p>\n
2.\u5faa\u73af\u94fe\u8868，\u6211\u4eec\u8fd9\u4e2a\u94fe\u8868\u662f\u7ebf\u6027\u7684，\u7c7b\u4f3c\u4e00\u6839\u9ebb\u7ef3，\u4f46\u6211\u4eec\u53ef\u4ee5\u5c06\u5c3e\u8282\u70b9\u7684 next \u6307\u5411\u5934\u8282\u70b9，\u8fd9\u6837\u5c31\u6784\u6210\u4e86\u9996\u5c3e\u95ed\u5408\u7684\u94fe\u8868，\u7c7b\u4f3c\u4e00\u4e2a\u5708，\u8fd9\u6837\u5c31\u662f\u5faa\u73af\u94fe\u8868，\u5177\u4f53\u7684\u5b9e\u73b0\u4e5f\u8981\u770b\u4f60\u94fe\u8868\u7684\u7ed3\u6784，\u8fd9\u91cc\u4e5f\u4e0d\u653e\u4ee3\u7801\u4e86\u3002<\/p>\n
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