这个程序是一个日期(包括年月日)类的具体实现有各种功能下载后即可研究,它包括了C++面向对象的几乎所有内容,对初学面向对象的学生十分有帮助.-the procedure is a date (including the date) class is a concrete realization of the various functions can be downloaded, It includes the object-oriented C in almost all the elemen