不是，想起来书上说floor和ceiling的负数跟正数取值有区别。书上还反复强调负号，负号！！

来源: Pilsung 于 2023-08-07 19:15:12 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.