#include <stdio.h>

/* program attempting to compute 
      1*1 + 3*3 + 5*5 + 7*7 + 9*9

   the desired output is
      the sum is 165
*/

// attempt 1 
int func (int x)
{
  int y = x*x;
  return y;
}

// attempt 2
/*
int func (int x)
{
  int y = x*x;
  printf ("%d squared is %d\n", x, y);
}
*/

 // attempt 3
 /*
int func (int x)
{
  int y = x*x;
  printf ("%d squared is %d\n", x, y);
  return y;
}
 */

int main ()
{
  int sum = func(1) + func(3) + func(5) + func(7) + func(9);
  printf ("the sum is %d\n", sum);

  return 0;
}