链表反转

/*链表反转的算法，其实很简单*/
list *listreverse(list *pHead)
{
    list *pList=pHead;
    list *paPre=NULL;
    list *paNext=NULL;
    do
    {
        paNext=pList->pNext;
        pList->pNext=paPre;
        paPre=pList;
        pList=paNext;
    }while(pList!=NULL);
    return paPre;
}