链表倒转

int reverse_list(struct node **hlist) {
        struct node **h,*t,*m;
        t=(*hlist)->next;
        h=hlist;
        (*h)->next=NULL;
        while(t) {

                m=t;
                t=t->next;
                m->next=*h;
                *h=m;
        }

}