#include <stdio.h>

#include <wchar.h>

#define PASSED  0

#define	FAILED  3

static int fd;

static void prepare (void);

#define PREPARE(argc, argv) prepare ()

#define TEST_FUNCTION do_test ()

static int do_test (void);

#include "../test-skeleton.c"

static void

prepare (void)

{

  fd = create_temp_file ("wrewind.", NULL);

  if (fd == -1)

    exit (3);

}

static int

do_test (void)

{

  FILE *fptr;

  char arg1;

  char arg2;

  int ret1, ret2, result, num;

  ret1 = 0;

  ret2 = 0;

  fptr = fdopen (fd, "w+");

  if (fptr == NULL)

    {

      printf ("Unable to open file.\n");

      return 1;

    }

  if (fwprintf (fptr, L"cderf") <= 0)

    {

      printf ("Unable to write to file with fwprintf().\n");

      fclose (fptr);

      return 2;

    }

  rewind (fptr);

  ret1 = fwscanf (fptr, L"%c%c", &arg1, &arg2);

  if (ret1 != 2)

    {

      printf ("first fwscanf returned %d, expected 2\n", ret1);

      return 3;

    }

  rewind (fptr);

  ret2 = fwscanf (fptr, L"%c%n%c", &arg1, &num, &arg2);

  if (ret2 != 2)

    {

      printf ("second fwscanf returned %d, expected 2\n", ret2);

      return 4;

    }

  if (arg2 != 'd')

    {

      result = FAILED;

      printf ("rewind after first fwscanf failed\n");

    }

  else

    {

      printf ("Passed\n");

      result = PASSED;

    }

  fclose (fptr);

  return result;

}