链表的加入删除C语言代码

以下是链表的加入删除C语言代码：

1. 声明链表结构体

struct Node {
    int data;
    struct Node* next;
};

2. 创建新节点并加入链表

struct Node* createNode(int data) {
    struct Node* newNode = (struct Node*)malloc(sizeof(struct Node));
    newNode->data = data;
    newNode->next = NULL;
    return newNode;
}

void insertNode(struct Node** head, int data) {
    struct Node* newNode = createNode(data);
    if (*head == NULL) {
        *head = newNode;
    } else {
        struct Node* temp = *head;
        while (temp->next != NULL) {
            temp = temp->next;
        }
        temp->next = newNode;
    }
}

3. 删除指定节点

void deleteNode(struct Node** head, int data) {
    struct Node* temp = *head;
    struct Node* prev = NULL;
    if (temp != NULL && temp->data == data) {
        *head = temp->next;
        free(temp);
        return;
    }
    while (temp != NULL && temp->data != data) {
        prev = temp;
        temp = temp->next;
    }
    if (temp == NULL) {
        return;
    }
    prev->next = temp->next;
    free(temp);
}