• 2022-07-29
    链栈S的栈顶指针为top,不能执行p结点入栈操作的是()
    A: S->top=p;
    B: p->next=S->top;S->top=p;
    C: p->next=S->top;S->top=p->next;
    D: p=S->top;S->top=p;