C_code/C语言/翁凯C语言/13/链表的删除.c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
#include <stdbool.h>
#include <string.h>
#ifdef _WIN32
#include <windows.h>
#include <direct.h>
#endif

/**
 * 链表操作示例程序
 *
 * 本程序演示了单向链表的基本操作：
 * 1. 创建链表并添加节点
 * 2. 遍历并打印链表
 * 3. 在链表中查找特定值
 * 4. 从链表中删除特定值的节点
 */

typedef struct _node
{
    int value;
    struct _node *next;
} Node;

typedef struct _list
{
    Node *head;
    Node *tail;
} List;

void add(List *pList, int value)
{
    Node *p = (Node *)malloc(sizeof(Node));
    p->value = value;
    p->next = NULL;
    // 将节点插入链表
    Node *last = pList->head;
    if (last != NULL)
    {
        while (last->next != NULL)
        {
            last = last->next;
        }
        // attach
        last->next = p;
    }
    else
    {
        pList->head = p;
    }
}

void print(List *pList)
{
    Node *p;
    for (p = pList->head; p; p = p->next)
    {
        printf("%d\t", p->value);
    }
    printf("\n");
}

int main()
{
    // 设置控制台编码为UTF-8
#ifdef _WIN32
    system("chcp 65001 > nul"); // 设置控制台编码为UTF-8
    SetConsoleOutputCP(65001);  // 设置控制台输出编码
    SetConsoleCP(65001);        // 设置控制台输入编码
#endif

    List list;
    list.head = NULL;
    list.tail = NULL;
    int number;
    do
    {
        printf("请输入一个整数：");
        scanf("%d", &number);
        if (number != -1)
        {

            add(&list, number);
        }
    } while (number != -1);
    print(&list);

    scanf("%d", &number);
    Node *p;
    int isFound = 0;
    for (p = list.head; p; p = p->next)
    {
        if (p->value == number)
        {
            printf("找到！\n");
            isFound = 1;
            break;
        }
    }
    if (!isFound)
    {
        printf("未找到！\n");
    }

    Node *q;
    for (q = NULL, p = list.head; p; q = p, p = p->next)
    {
        if (p->value == number)
        {
            if (q == NULL)
            {
                list.head = p->next;
            }
            else
            {
                q->next = p->next;
            }
            free(p);
            printf("删除成功！\n");

            break;
        }
    }

    return 0;
}