monks, 

Program : I

#!/usr/bin/perl

use strict;

my $a = "[abc][hij]";
my $b = " aj";
if ($b =~ /$a/)
{
   print "yes";
}
else
{
   print "no";
}
________________________________________

Program : II

my $a = "[abc][hij]";
my $b = " aj";
if ($a =~ /$b/)
{
  print "yes";
}
else
{
  print "no";
}

[download]
The first program prints 'yes' the second program prints 'no'. Two program differs in there condition checking. rest all same. could anyone explain me better.

In reply to same program different output by jesuashok

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


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.