stdio-common/scanf4.c

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