"What is the mistake here?"

Again, no:

use strict;
use warnings;

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See Use strict and warnings, Use strict warnings and diagnostics or die and How do I post a question effectively?. Didn't you post this already as Question on the format statement?

In reply to Re: Format statement and 'if' loop by marto
in thread Format statement and 'if' loop by perl_seeker

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


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