• 2022-06-16
    已知带头结点的链栈top, 则该链栈不空时, 出栈操作的语句是( )
    A: top->;next=top->;next->;next; *x=top->;next->;data;
    B: *x=top->;next->;data; top->;next=top->;next->;next; free(top->;next);
    C: *x=top ->;data;p=top;top =p->;next;free(p);
    D: *x=top->;next->;data;p=top->;next;top->;next=p->;next;free(p);