stdio-common/scanf4.c

   1 #include <stdio.h>
   2
   3 int
   4 main(int arc, char *argv[])
   5 {
   6   int res;
   7   unsigned int val;
   8
   9   FILE *fp = fopen ("/dev/null", "r");
  10
  11   val = 0;
  12   res = fscanf(fp, "%n", &val);
  13
  14   printf("Result of fscanf %%n = %d\n", res);
  15   printf("Scanned format = %d\n", val);
  16
  17   res = fscanf(fp, "");
  18   printf("Result of fscanf \"\" = %d\n", res);
  19   if (res != 0)
  20     abort ();
  21
  22   res = fscanf(fp, "BLURB");
  23   printf("Result of fscanf \"BLURB\" = %d\n", res);
  24   if (res >= 0)
  25     abort ();
  26
  27   fclose (fp);
  28
  29   return 0;
  30   return 0;
  31 }