一个日志类程序。平时写程序时经常要记录下日志，C++的cout类很好用吧，呵呵，以前写了个类似的类 来记录下程序的运行日志。-A log-type procedures. Usually write programs often have to record the log, C++ Good use of court-type bar, huh, huh, previously wrote a similar category to record the procedures to run t