注释行显示：E0135 class "Link" 没有成员 "data" ，但是前边已经定义了

int main()
{
struct Link* head = (struct Link*)malloc(sizeof(struct Link));
Link *createLink(int);
head = createLink(0);
reverse(head);
printf("\n逆置后链表值为：");
while (head->next)
{
printf("%d ", head->next->data);//显示错误
head = head->next;
}
return 0;
}

哪里定义了啊？看不到啊