描述一个动物类，分别输出白天黑夜的行为。-Describe an animal categories, the behavior of output day and night.

一夜白发千字文的源代码，理工专用，很管用-Night white-haired Thousand Character Classic

能够实现定时关机功能，这对于夜晚使用电脑发射无线网而懒于关机的人提供便利。如果对关机时间不满意，可以推迟关机时间，并且能够实时显示剩余关机时间。-Can achieve timing shutdown function, use the computer for the night launch wireless networks provide convenience and loathe to turn it off. If the shutdown time are not satisfi