UTC Time

[fergmj]

I have a very newbie question.

I need to get the current time in UTC but I have no idea how to use the time.h.

Can someone walk me down even the most basic of details?

Thanks

fergmj

 

[ArkM]

The code from MSDN (with minimal modifications:

/* GMTIME.C: This program uses gmtime to convert a long-
 * integer representation of coordinated universal time
 * to a structure named newtime, then uses asctime to
 * convert this structure to an output string.
 */

#include <time.h>
#include <stdio.h>

int main( void )
{
   struct tm *newtime;
   long ltime;

   time( &ltime );

   /* Obtain coordinated universal time: */
   newtime = gmtime( &ltime );
   printf( "Coordinated universal time is %s\n", 
                               asctime( newtime ) );
   return 0;
}

See MSDN help about gmtime(0 and struct tm fields (in IDE set cursor on gmtime word and press F1.
Strictly speaking, in C++ you must include

#include <ctime>
#include <cstdio>

without .h.