Hello again leelu,

The monks are happy to help you, but you need to meet us half-way. First, please follow wrog’s advice and format your post using paragraph and code tags:

<p>First paragraph</p>
<code>

use strict;
use warnings;

...

    close( $f2 ); #close output file handle
}
[download]

</code>
<p>Final paragraph</p>

See:

• Markup in the Monastery
• Writeup Formatting Tips
• Perl Monks Approved HTML tags

Second, please follow afoken’s advice and post actual code. The code you have posted does not compile:

• The $ sigil is missing from the first occurrence of $f1.
• You have use strict but no declarations for the variables $results, @fields, $flag, and $inputdata.
• The line print James|chicago "\n"; contains unquoted text; likewise the line print already $inputdata exists"\n";.

Third, you say you are “getting error during while condition,” but don’t explain what that error is. Please see:

• How do I post a question effectively?
• I know what I mean. Why don't you?

and be sure to show the output you want to see, and exactly how it differs from the output you do see.

Hope that helps,

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Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

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Read Where should I post X? if you're not absolutely sure you're posting in the right place.

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• Markup in the Monastery

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See Writeup Formatting Tips and other pages linked from there for more info.