stdio-common/tstdiomisc.c

   1 #include <stdio.h>
   2
   3 int
   4 t1 (void)
   5 {
   6   int n = -1;
   7   sscanf ("abc  ", "abc %n", &n);
   8   printf ("t1: count=%d\n", n);
   9
  10   return n != 5;
  11 }
  12
  13 int
  14 t2 (void)
  15 {
  16   int result = 0;
  17   int n;
  18   long N;
  19   int retval;
  20 #define SCAN(INPUT, FORMAT, VAR, EXP_RES, EXP_VAL) \
  21   VAR = -1; \
  22   retval = sscanf (INPUT, FORMAT, &VAR); \
  23   printf ("sscanf (\"%s\", \"%s\", &x) => %d, x = %ld\n", \
  24           INPUT, FORMAT, retval, (long int) VAR); \
  25   result |= retval != EXP_RES || VAR != EXP_VAL
  26
  27   SCAN ("12345", "%ld", N, 1, 12345);
  28   SCAN ("12345", "%llllld", N, 0, -1);
  29   SCAN ("12345", "%LLLLLd", N, 0, -1);
  30   SCAN ("test ", "%*s%n",  n, 0, 4);
  31   SCAN ("test ", "%2*s%n",  n, 0, -1);
  32   SCAN ("12 ",   "%l2d",  n, 0, -1);
  33   SCAN ("12 ",   "%2ld",  N, 1, 12);
  34
  35   n = -1;
  36   N = -1;
  37   retval = sscanf ("1 1", "%d %Z", &n, &N);
  38   printf ("sscanf (\"1 1\", \"%%d %%Z\", &n, &N) => %d, n = %d, N = %ld\n", \
  39           retval, n, N); \
  40   result |= retval != 1 || n != 1 || N != -1;
  41
  42   return result;
  43 }
  44
  45 int
  46 main (int argc, char *argv[])
  47 {
  48   int result = 0;
  49
  50   result |= t1 ();
  51   result |= t2 ();
  52
  53   result |= fflush (stdout) == EOF;
  54
  55   return result;
  56 }