sprintf is too easy, here's a fun way.

#!/usr/bin/perl
my $num = 5;
$num = substr("00",2-length($num)) . $num if length($num)<2;
print $num;

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I only mention it, becuase sometimes you want to pad with something other than 0's (for example "." when doing a TOC listing.)

In reply to Re: Ok, here's an easy one by abitkin
in thread Zero padding numbers (was: Ok, here's an easy one) by glickjd

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