给我一个C语言写的链表代码

下面是一个简单的 C 语言链表代码示例：

#include <stdio.h>
#include <stdlib.h>
 
// 链表节点
struct Node {
    int data;
    struct Node* next;
};
 
// 在链表头部插入节点
struct Node* insert(struct Node* head, int val) {
    struct Node* node = (struct Node*)malloc(sizeof(struct Node));
    node->data = val;
    node->next = head;
    return node;
}
 
// 删除链表中的节点
struct Node* delete(struct Node* head, int val) {
    struct Node* prev = NULL;
    struct Node* curr = head;
    while (curr != NULL) {
        if (curr->data == val) {
            if (prev == NULL) {
                head = curr->next;
            } else {
                prev->next = curr->next;
            }
            free(curr);
            break;
        }
        prev = curr;
        curr = curr->next;
    }
    return head;
}
 
// 打印链表
void printList(struct Node* head) {
    while (head != NULL) {
        printf("%d ", head->data);
        head = head->next;
    }
}
 
int main() {
    struct Node* head = NULL;
    head = insert(head, 3);
    head = insert(head, 5);
    head = insert(head, 6);
    head = insert(head, 9);
    printList(head);
    head = delete(head, 5);
    printf("\n");
    printList(head);
    return 0;
}

这是一个简单的链表实现，包含插入和删除节点操作，并且可以打印链表。你可以根据需要进行修改和扩展。