链表倒序

 1 mylist *listReverse(mylist *head)
 2 {
 3     mylist *p=head;
 4     mylist *pfront=NULL,*pNext;
 5     while(p!=NULL)
 6     {
 7         pNext=p->next;
 8         p->next=pfront;
 9         pfront=p;
10         p=pNext;
11     }
12     return pfront;
13 }