/* Problem 1--An Inductively-Defined Function
   This is a pretty easy recursive program; however, it is even easier
   than that!!  The answer can always be found by dividing the input by
   2 and rounding up! */

#include <stdio.h>
#include <stdlib.h>

int main (int argc, char **argv);

FILE *in, *out;

int main (int argc, char **argv) {

  int i;

 in = fopen ("prob1.in","r");
 out = fopen ("prob1.out","w");
 while (1) {
  fscanf (in,"%d",&i);
  if (i==-1) break;
  fprintf (out,"f(%d) = %d\n\n",i,(i+1)/2);
 }
 fclose (in);
 fclose (out);
 return EXIT_SUCCESS;
}