指针的指针

 

struct name
{
    char * liubbc;
    struct name *next;

}
struct raw_name
{
    struct name *head;
}

struct raw_name netdev_chain ;
netdev_chain.head = NULL;

void func(struct name **a, struct name *node)
{
    while((*a)!= NULL)
    {
        a = &((*a)->next);/*(*a)->next 取的是next指针本身的地址而不是指针值NULL*/
    }

    node->next = *a;
    *a = node;
}