// * *****************************************************
// * This program displays the Fibonacci sequence.       *
// *                                                     *
// * Note: since this program utilizes 32-bit signed     *
// *       integers, it is limited in displaying long    *
// *       number sequences. To alleviate this, I will   *
// *       be implementing string arithmetic.            *
// * *****************************************************
void main (void)
{
  int n, next, current, previous;
  bool done;

  done = FALSE;
  previous = 0;
  current = 0;
  next = 0;
  while (!done)
  {
    printf ("%d ", next);
    previous = current;
    current = next;
    if (current == 0)
    {
      next = 1;
    }
    else
    { 
//
// Since I'm working with signed integes, I need to stop when I hit the upper limit for a positive number. 
// Otherwise, the numbers will wrap around into negative numbers.
      if ((previous >= 0) && (current >= 0))
      {
        next = current + previous;
        if (next < 0)
        {
          done = TRUE;
        }
      }
      else
      {
        done = TRUE;
      }
    }
  }
  printf ("\n");
}