c语言单链表程序代码怎么写

#include <stdio.h>
#include <stdlib.h>

// 定义链表节点结构体
struct Node {
    int data;
    struct Node* next;
};

// 在链表末尾插入新节点
void insertAtEnd(struct Node** head, int data) {
    // 创建新节点
    struct Node* newNode = (struct Node*)malloc(sizeof(struct Node));
    newNode->data = data;
    newNode->next = NULL;

    // 如果链表为空，则新节点为头节点
    if (*head == NULL) {
        *head = newNode;
    }
    else {
        // 找到链表末尾并插入新节点
        struct Node* current = *head;
        while (current->next != NULL) {
            current = current->next;
        }
        current->next = newNode;
    }
}

// 打印链表
void printList(struct Node* head) {
    struct Node* current = head;
    while (current != NULL) {
        printf("%d ", current->data);
        current = current->next;
    }
    printf("\n");
}

int main() {
    struct Node* head = NULL;

    // 依次插入节点
    insertAtEnd(&head, 1);
    insertAtEnd(&head, 2);
    insertAtEnd(&head, 3);
    insertAtEnd(&head, 4);

    // 打印链表
    printf("链表：");
    printList(head);

    return 0;
}