sub adding ($$)
{ my $first=shift;
  my $second=shift;

  my $third=($first + $second);

  print("$first + $second = $third\n");
}

sub adding ($$$)
{ my $first=shift;
  my $second=shift;
  my $third=shift;

  print("$first + $second = $third\n");
}

1;