计算机学科专业基础2021 真题档案

h->next = h->next->next;
q = h->next;
free(q);

q = h->next;
h->next = h->next->next;
free(q);

q = h->next;
h->next = q->next;
if (p != q)
    p = h;
free(q);

q = h->next;
h->next = q->next;
if (p == q)
    p = h;
free(q);