tm, time_t 转换

tm, time_t 转换

   //tm->time_t

   struct  tm tmDate;

   time_t time_tDate;

   memset(&tmDate,0,sizeof(tm));

   tmDate.tm_year -= 1900; //需要减去1900,否则mktime会返回-1

   tmDate.tm_mon -=1;

   time_tDate = mktime(&tmDate);

  

   //time_t->tm

   time_t tNow;

   struct tm tmlocal;

   time(&tNow);

   tmlocal = *localtime(&tNow);