一个进行日期的程序，计算某年月日前后一定年数（或月数、天数）的年月日-a date for the procedure, calculation of years before and after a given number of years (or months and days) the date

输入一个年月日，可以计算出是星期几。这段代码是在VISUAL C++ 6.O的编程环境下编写的。-Enter a date, you can calculate the week. This code is in VISUAL C++ 6.O programming environment prepared.

localtime函数不是线程安全的，这个时间类可以完成获取当前时间，计算时间间隔，获取当前年月日等功能。该类可以在多线程中使用。-localtime function is not thread-safe, this time the class can be done to get the current time to calculate the time interval, to get the current date and other functions. This class c

计算年月日回文的日期 计算年月日回文的日期-cal the day is the same as reverted