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10923002
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2012-06-06T22:07:59.717
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2012-06-06T22:07:59.717
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You need to break your code into manageable steps. <ol> <li>Create data-structures from the files <pre><code>use Slurp; my @input = map{ [ split /\s+/, $_, 2 ] } slurp $input_filename; # etc </code></pre></li> <li>Process each element of <code>input_22.txt</code>, using those data structures.</li> </ol> I really think you should look into <a href="http://www.perlmol.org" rel="nofollow">PerlMol</a>. After all, half the reason to use Perl is <a href="http://cpan.org" rel="nofollow">CPAN</a>. <hr> Things you did well <ul> <li>Using 3-arg <a href="http://perldoc.perl.org/functions/open.html" rel="nofollow"><code>open</code></a></li> <li><code>use strict;</code></li> <li><code>use warnings;</code></li> </ul> Things you shouldn't have done <ul> <li>(Re)defined <code>$a</code> and <code>$b</code> They are already defined for you.</li> <li>Reimplemented <a href="http://p3rl.org/Slurp" rel="nofollow"><code>slurp</code></a> (poorly)</li> <li>Read the same file in multiple times. You opened <code>SD_2.txt</code> once for every line of <code>input_22.txt</code>.</li> <li>Defined symbols outside of the scope where you use them. <code>$j</code>, <code>$k</code>, <code>@array</code> and <code>@array1</code> are defined twice, but only one of the definitions is being used.</li> <li>Used <a href="http://perldoc.perl.org/functions/open.html" rel="nofollow"><code>open</code></a> and <a href="http://perldoc.perl.org/functions/close.html" rel="nofollow"><code>close</code></a> without some sort of error checking. Either <code>open ... or die;</code> or <code>use autodie;</code></li> <li>You used bareword filehandles. <code>IN</code>, <code>FILE</code> etc Instead use <code>open my $FH, ...</code></li> </ul> Most of those aren't that big of a deal though, for a one-off program.
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1. POPerl: Matching four different files and obtaining particular Information in output file
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1. USBrad Gilbert
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1. COThanks alot. I ll work on these points.
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 USShipra

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