#!/usr/bin/perl -w
use strict;
my ($hours, $minutes, $seconds) = second2HourMinuteSecond(999);
print "999 seconds is $hours hours, $minutes minutes and $seconds seconds";
print "\n";
sub second2HourMinuteSecond {
my ($h,$m);
my $seconds = shift;; # defaults to shifting @_
$h = int($seconds/(60*60));
$seconds %= 60*60;
$m = int($seconds/60);
$seconds %= 60;
($h,$m,$seconds);
}