sub combo
{
  my $sum = $fred * $barney
  return $sum; 
    if ($fred > $barney)
    {
     $fred;   #also why do I have to put another $fred here? It doesn #'t seem to be part of "if" nor of "else"
    } else {
        $barney;    
    }
} 

print "Enter value:";
$fred = <STDIN>;
# chomp $fred;
print "Enter value:";
$barney = <STDIN>;
# chomp $barney;