stdio-common/scanf4.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 int
   5 main(int arc, char *argv[])
   6 {
   7   int res;
   8   unsigned int val;
   9
  10   FILE *fp = fopen ("/dev/null", "r");
  11
  12   val = 0;
  13   res = fscanf(fp, "%n", &val);
  14
  15   printf("Result of fscanf %%n = %d\n", res);
  16   printf("Scanned format = %d\n", val);
  17
  18   res = fscanf(fp, "");
  19   printf("Result of fscanf \"\" = %d\n", res);
  20   if (res != 0)
  21     abort ();
  22
  23   res = fscanf(fp, "BLURB");
  24   printf("Result of fscanf \"BLURB\" = %d\n", res);
  25   if (res >= 0)
  26     abort ();
  27
  28   fclose (fp);
  29
  30   return 0;
  31   return 0;
  32 }