#include <stdio.h>            /* squares3.c */

int count=0;

int f(int k) {
  count++;    /* count calls to this function */
  k *= 2;
  return ++k;
}

int main() {
  int s = 0, i;
  for(i = 0; i < 4; i++)
   { s += f(i);
     printf("%d  %d\n", i, s);
   }
  printf("%d  %d  %d\n", i, s, count);
  return 0;
}