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Language Ccpp Cref Examples Time

/ ************************************************************************
 *
 * Purpose: To play with the time.h functions.
 *
 * Author:  M.J. Leslie
 *
 * Date:    18-Mar-95
 *
 ************************************************************************/

#include <stdio.h>		        /* NULL		       */
#include <time.h>		        /* ctime, asctime      */

main()
{
  time_t now;				/* define 'now'. time_t is probably
					 * a typedef	*/

				        /* Calender time is the number of 
				         * seconds since 1/1/1970   	*/

  now = time((time_t *)NULL);		/* Get the system time and put it
   					 * into 'now' as 'calender time' */

  printf("%s", ctime(&now));		/* Format data in 'now'
					 * NOTE that 'ctime' inserts a
					 * '\n' */

   /*********************************************************************/

	/* Here is another way to extract the time/date information	*/

  time(&now);

  printf("%s", ctime(&now));		/* Format data in 'now'		*/

   /*********************************************************************/

  {
    struct tm *l_time;
					 
    l_time = localtime(&now);		/* Convert 'calender time' to
					 * 'local time' - return a pointer 
					 * to the 'tm' structure. localtime
					 * reserves the storage for us.	*/
    printf("%s", asctime(l_time));
  }

   /*********************************************************************/

  time(&now);
  printf("%s", asctime(localtime( &now  )));

   /*********************************************************************/

  {
    struct tm *l_time;
    char string[20];
					 
    time(&now);
    l_time = localtime(&now);
    strftime(string, sizeof string, "%d-%b-%y\n", l_time);
    printf("%s", string);
  }
}


file: /Techref/language/ccpp/cref/EXAMPLES/time.c, 1KB, , updated: 1997/5/21 10:15, local time: 2019/6/16 23:05,
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