fputs ("Test 9:\n", stdout); {  float value; int res;  res = sscanf ("0123", "%2f", &value); if (res != 1 || value != 1.0) { fputs ("test failed!\n", stdout); result = 1; } }
main (int argc, char **argv){  char buf[BUFSIZ];  FILE *in = stdin, *out = stdout;  int x;  int result = 0;  if (sscanf ("0", "%d", &x) != 1)    {      fputs ("test failed!\n", stdout);      result = 1;    }  sscanf ("conversion] Zero flag Ze]ro#\n", "%*[^]] %[^#]\n", buf);  if (strcmp (buf, "] Zero flag Ze]ro") != 0)    {      fputs ("test failed!\n", stdout);      result = 1;    }  if (argc == 2 && !strcmp (argv[1], "-opipe"))    {      out = popen ("/bin/cat", "w");      if (out == NULL)	{	  perror ("popen: /bin/cat");	  result = 1;	}    }  else if (argc == 3 && !strcmp (argv[1], "-ipipe"))    {      sprintf (buf, "/bin/cat %s", argv[2]);      in = popen (buf, "r");      if (in == NULL)	{	  perror ("popen: /bin/cat");	  result = 1;	}    }  {    char name[50];    fprintf (out,	     "sscanf (\"thompson\", \"%%s\", name) == %d, name == \"%s\"\n",	     sscanf ("thompson", "%s", name),	     name);    if (strcmp (name, "thompson") != 0)      {	fputs ("test failed!\n", stdout);	result = 1;      }  }  fputs ("Testing scanf (vfscanf)\n", out);  fputs ("Test 1:\n", out);  {    int n, i;    float x;    char name[50];    n = fscanf (in, "%d%f%s", &i, &x, name);    fprintf (out, "n = %d, i = %d, x = %f, name = \"%.50s\"\n",	     n, i, x, name);    if (n != 3 || i != 25 || x != 5.432F || strcmp (name, "thompson"))      {	fputs ("test failed!\n", stdout);	result = 1;      }  }  fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));  if (strcmp (buf, "\n"))    {      fputs ("test failed!\n", stdout);      result = 1;    }  fputs ("Test 2:\n", out);  {    int i;    float x;    char name[50];    (void) fscanf (in, "%2d%f%*d %[0123456789]", &i, &x, name);    fprintf (out, "i = %d, x = %f, name = \"%.50s\"\n", i, x, name);    if (i != 56 || x != 789.0F || strcmp (name, "56"))      {	fputs ("test failed!\n", stdout);	result = 1;      }  }  fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));  if (strcmp (buf, "a72\n"))    {      fputs ("test failed!\n", stdout);      result = 1;    }  fputs ("Test 3:\n", out);  {    static struct {      int count;      float quant;      const char *units;      const char *item;    } ok[] = {      { 3, 2.0F, "quarts", "oil" },      { 2, -12.8F, "degrees", "" },      { 0, 0.0F, "", "" },      { 3, 10.0F, "LBS", "fertilizer" },      { 3, 100.0F, "rgs", "energy" },      { -1, 0.0F, "", "" }};    size_t rounds = 0;    float quant;    char units[21], item[21];    while (!feof (in) && !ferror (in))      {	int count;	if (rounds++ >= sizeof (ok) / sizeof (ok[0]))	  {	    fputs ("test failed!\n", stdout);	    result = 1;	  }	quant = 0.0;	units[0] = item[0] = '\0';	count = fscanf (in, "%f%20s of %20s", &quant, units, item);	(void) fscanf (in, "%*[^\n]");	fprintf (out, "count = %d, quant = %f, item = %.21s, units = %.21s\n",		 count, quant, item, units);	if (count != ok[rounds-1].count || quant != ok[rounds-1].quant	    || strcmp (item, ok[rounds-1].item)	    || strcmp (units, ok[rounds-1].units))	  {	    fputs ("test failed!\n", stdout);	    result = 1;	  }      }  }  buf[0] = '\0';  fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));  if (strcmp (buf, ""))    {      fputs ("test failed!\n", stdout);      result = 1;    }  if (out != stdout)    pclose (out);  fputs ("Test 4:\n", out);  {    int res, val, n;    res = sscanf ("-242", "%3o%n", &val, &n);    printf ("res = %d, val = %d, n = %d\n", res, val, n);    if (res != 1 || val != -20 || n != 3)      {	fputs ("test failed!\n", stdout);	result = 1;      }  }  fputs ("Test 5:\n", out);  {    double a = 0, b = 0;    int res, n;    res = sscanf ("1234567", "%3lg%3lg%n", &a, &b, &n);    printf ("res = %d, a = %g, b = %g, n = %d\n", res, a, b, n);    if (res != 2 || a != 123 || b != 456 || n != 6)      {	fputs ("test failed!\n", stdout);	result = 1;      }    res = sscanf ("0", "%lg", &a);    printf ("res = %d, a = %g\n", res, a);    if (res != 1 || a != 0)      {	fputs ("test failed!\n", stdout);	result = 1;      }    res = sscanf ("1e3", "%lg%n", &a, &n);    printf ("res = %d, a = %g, n = %d\n", res, a, n);    if (res != 1 || a != 1000 || n != 3)      {	fputs ("test failed!\n", stdout);	result = 1;      }  }  fputs ("Test 6:\n", stdout);  {    char *p = (char *) -1;    int res;    sprintf (buf, "%p", NULL);    res = sscanf (buf, "%p", &p);    printf ("sscanf (\"%s\", \"%%p\", &p) = %d, p == %p\n", buf, res, p);    if (res != 1 || p != NULL)      {	fputs ("test failed!\n", stdout);	result = 1;      }  }  fputs ("Test 7:\n", stdout);  {    short a[2] = { -1, -1 };    int res;    res = sscanf ("32767 1234", "%hd %hd", &a[0], &a[1]);    printf ("res = %d, a[0] = %d, a[1] = %d\n", res, a[0], a[1]);    if (res != 2 || a[0] != 32767 || a[1] != 1234)      {	fputs ("test failed!\n", stdout);	result = 1;      }  }  fputs ("Test 8:\n", stdout);  {    double d = 123456.789;    int res;    res = sscanf ("0x1234", "%lf", &d);    printf ("res = %d, d = %f\n", res, d);    if (res != 0 || d != 123456.789)      {	fputs ("test failed!\n", stdout);	result = 1;      }  }  exit (result);}