该文件时是介绍实习期间怎么写日历，这是一典型的实习日历模板，具有各大学通用的功能。-When the file is introduced during the internship how to write calendar, which is a typical internship calendar template with the common features of the various universities.

用C++编写的日历程序,实现了从任意时间起对日期的查询-calendar formed by C++