本程序是一个很小的工具。我们的系统中全部采用time_t作为数据库和内部的时间。但平时检查测试时经常需要查看字符串格式的时间，为此特意制作一个小工具，组内使用频率还很高。-This procedure is a small tool. Our system all use time_t as the database and the internal time. However, the test usually checks often need to check the string for