#!/usr/bin/perl
use strict;
use warnings;
sub fact {
    my $n = shift;
    if ($n > 1) {
        return $n * fact($n - 1);
    } else {
        return 1;
    }
}
sub bar {
    print "One\n";
    print "Two\n";
    print "Three\n";
    return;
}
fact(5);
bar();