stdio/tstscanf.c

   1 /* Copyright (C) 1991, 1992 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 #ifdef  BSD
  21 #include </usr/include/stdio.h>
  22 #else
  23 #include <stdio.h>
  24 #endif
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28
  29 int
  30 DEFUN(main, (argc, argv), int argc AND char **argv)
  31 {
  32   char buf[BUFSIZ];
  33   FILE *in = stdin, *out = stdout;
  34
  35   if (argc == 2 && !strcmp (argv[1], "-opipe"))
  36     {
  37       out = popen ("/bin/cat", "w");
  38       if (out == NULL)
  39         {
  40           perror ("popen: /bin/cat");
  41           exit (EXIT_FAILURE);
  42         }
  43     }
  44   else if (argc == 3 && !strcmp (argv[1], "-ipipe"))
  45     {
  46       sprintf (buf, "/bin/cat %s", argv[2]);
  47       in = popen (buf, "r");
  48     }
  49
  50   {
  51     char name[50];
  52     fprintf (out,
  53              "sscanf (\"thompson\", \"%%s\", name) == %d, name == \"%s\"\n",
  54              sscanf ("thompson", "%s", name),
  55              name);
  56   }
  57
  58   fputs ("Testing scanf (vfscanf)\n", out);
  59
  60   fputs ("Test 1:\n", out);
  61   {
  62     int n, i;
  63     float x;
  64     char name[50];
  65     n = fscanf (in, "%d%f%s", &i, &x, name);
  66     fprintf (out, "n = %d, i = %d, x = %f, name = \"%.50s\"\n",
  67              n, i, x, name);
  68   }
  69   fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
  70   fputs ("Test 2:\n", out);
  71   {
  72     int i;
  73     float x;
  74     char name[50];
  75     (void) fscanf (in, "%2d%f%*d %[0123456789]", &i, &x, name);
  76     fprintf (out, "i = %d, x = %f, name = \"%.50s\"\n", i, x, name);
  77   }
  78   fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
  79   fputs ("Test 3:\n", out);
  80   {
  81     float quant;
  82     char units[21], item[21];
  83     while (!feof (in) && !ferror (in))
  84       {
  85         int count;
  86         quant = 0.0;
  87         units[0] = item[0] = '\0';
  88         count = fscanf (in, "%f%20s of %20s", &quant, units, item);
  89         (void) fscanf (in, "%*[^\n]");
  90         fprintf (out, "count = %d, quant = %f, item = %.21s, units = %.21s\n",
  91                  count, quant, item, units);
  92       }
  93   }
  94   fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
  95
  96   if (out != stdout)
  97     pclose (out);
  98
  99   exit(EXIT_SUCCESS);
 100 }