#!/usr/bin/perl
# Copyright 2002-2015, Paul Johnson (paul@pjcj.net)
# This software is free. It is licensed under the same terms as Perl itself.
# The latest version of this software should be available from my homepage:
# http://www.pjcj.net
use strict;
use warnings;
my @x;
sub xx {
$x[shift]++;
}
xx(4);