c语言生成一个代码 ：建立双向链表，并实现其插入和删除操作。

可以的，这是一个很基础的编程问题。以下是一个 c 语言的双向链表代码实现：

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

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

struct Node* head;

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

void InsertAtHead(int x) {
struct Node* newNode = GetNewNode(x);

if (head == NULL) {
head = newNode;
return;
}

head->prev = newNode;
newNode->next = head;
head = newNode;
}

void Delete(int x) {
struct Node* temp = head;

while (temp != NULL) {
if (temp->data == x) {
if (temp == head && temp->next == NULL) {
head = NULL;
} else if (temp == head) {
head = head->next;
head->prev = NULL;
} else if (temp->next == NULL) {
temp->prev->next = NULL;
} else {
temp->prev->next = temp->next;
temp->next->prev = temp->prev;
}

free(temp);
return;
}

temp = temp->next;
}
}

int main() {
head = NULL;
InsertAtHead(2);
InsertAtHead(4);
InsertAtHead(6);
InsertAtHead(8);
Delete(6);
return 0;
}