time/ap.c

   1 /* Copyright (C) 1991 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <time.h>
  23 #include <malloc.h>
  24
  25 /* Prints the time in the form "hh:mm ?M", where ? is A or P.
  26    A simple test for strftime().  */
  27 int
  28 DEFUN(main, (argc, argv), int argc AND char **argv)
  29 {
  30   char buf[20];
  31   time_t t;
  32
  33   mcheck (NULL);
  34
  35   if (argc != 1)
  36     fprintf(stderr, "Usage: %s\n", argv[0]);
  37
  38   t = time((time_t *) NULL);
  39   if (strftime(buf, sizeof(buf), "%I:%M %p", localtime(&t)) == 0)
  40     exit(EXIT_FAILURE);
  41
  42   puts(buf);
  43
  44   exit(EXIT_SUCCESS);
  45   return EXIT_SUCCESS;
  46 }