about the linked list//

Question

struct node
{
int date;
struct node *next;
};
typedef struct node linknode;
typedef linknode *linklist;
linklist creatlink()
{
linklist head,tail,q;
int x;
head=tail=NULL;
printf("请输入整数序列(以空格分隔，以0作为结束):\n");
scanf("%d",&x);
while(x!=0)
{
q=(linklist)malloc(sizeof (linknode));
q->date=x;
if(head==NULL)
head=tail=q;
else
{
tail->next=q;
tail=q;
}
scanf("%d",&x);
}
if(tail!=NULL)
tail=NULL;//can i change the tail->next=NULL to tail=NULL
return head;
}

Answer 1

what is your specific question?