I have a better odd/even function:

bool isEven( long long x ) {  
  if ( x < 0 ) x = -x;  
  if ( x == 1 )  
    return false;  
  if ( x == 2 )  
    return true;  
  return isEven( x - 2 );  
}

This will work for both negative numbers and arbitrarily large integers. I've tested it up to 26 but I'm pretty sure it will work up to infinity.

Though serious question: Why are these forums coded in such a way that they ignore single newlines? How hard is it to replace a newline with a br tag?

Edit: added two spaces, should look much better.

Edit2: just looks a bit better lol

Edit3: better now?