C 中的链表

Question

这是我试图完成的用于构建链表的代码片段。出于某种原因，我在尝试编译代码时不断收到错误 "error: expected ‘;’, identifier or ‘(’ before ‘struct’ "。谁能帮帮我。

struct node;
struct node* buildList(int x);
void push(struct node** headRef, int data);
int findLen(struct node** headRef);

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

struct node* buildList(int x){
   struct node* head = NULL;
   head = malloc(sizeof(struct node));

   head->data = x;
   head->next = NULL;

   return head;
}

Answer 1

尝试在结构声明后加一个分号

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