#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);
  }
}

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