(11)以下函数creat用来建立一个带头结点的单向链表,新产生的结点总是插在链表的末尾.单向链表的头指针作为函数值返回.请填空:
           #include
           struct list
           { char data;
             struct list * next;
           };
             struct list * creat(  )
            {  struct list * h,* p,* q;
               char ch;
               h=    18    malioc(sizeof(struct list));
               p=q=h;
               ch=getchar();
               while(ch!='?')
               {     p=    19     malloc(sizeof(struct list));
                     p->data=ch;
                     p->next=p;
                     q=p;
                     ch=getchar();
                }
                p->next='\0';
                   20   
                }

                       二级C答案
一 选择题((1)～(40)题每题1分,(41)～(50)题每题2分,共60分)
(1)  B         (2)   B        (3)  C        (4)  A      (5)  C
(6)  B         (7)   B        (8)  B        (9)  C      (10) C