while((p->num!=xuehao)&&(p->next!=Null))
        {
            p=p->next;
        }
        if(p->next!=Null)
        {
            pi->next=p->next;
            p->next=pi;
        }
        else
        {
            p->next=pi;
            pi->next=Null;
        }


大神们能否帮忙翻译一下