scanf的输入和读取

Question

为什么最后不会读取9999，还要让我再输入一次才能读取9999并退出程序？

typedef struct LinkList {
    int date;
    LinkList* Next;
}LinkList,*pLinkList;

void ListCreat(pLinkList& L)
{
    pLinkList tem1;
    L = (pLinkList)malloc(sizeof(LinkList));
    tem1 = (pLinkList)malloc(sizeof(LinkList));
    int x = scanf("%d ", &x);
    L->date = x;
    tem1 = L;
    while (scanf("%d ", &x))
    {
        if (x != 9999) {
            pLinkList tem2;
            tem2 = (pLinkList)malloc(sizeof(LinkList));
            tem2->date = x;
            tem1->Next = tem2;
            tem1 = tem1->Next;
        }
        else break;
    }
    tem1 = NULL;
    free(tem1);
}

int main()
{
    pLinkList L;
    ListCreat(L);
}

Answer 1

scanf中%d后面不要加空格