c++ 根据编译时间的版本号输出

看了一段代码，根据版本的编译日期生成版本号，觉得很不错，记下来以后可用，哈哈

GetVersion(){std::string monthes[] =  {  "Jan",  "Feb",  "Mar",  "Apr",  "May",  "Jun",  "Jul",  "Aug",  "Sep",  "Oct",  "Nov",  "Dec",  };  std::string dateStr = __DATE__; int year = atoi(dateStr.substr(dateStr.length() - 4).c_str());int month = 0;  for(int i = 0; i < 12; i++)  {  if(dateStr.find(monthes[i]) != string::npos)  {  month = i + 1;  break;  }  }  std::string dayStr = dateStr.substr(4, 2);int day = atoi(dayStr.c_str());std::string timeStr = __TIME__;  std::string hourStr = timeStr.substr(0, 2);int hour = atoi(hourStr.c_str());char version[20];sprintf(version, "1.0.%04d%02d%02d%02d", year, month, day, hour);return version;}