Every time you create a post here, you get a reminder to use code tags, it literally looks like
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML"

so follow the advice, and put your code in between code tags, its where code (and data) goes :)

Now your code doesn't use lexical filehandles, which means you have not read perlintro . It also doesn't use strict or warnings, and in fact, it has syntax errors

$ perl -c pm.911696.pl No comma allowed after filehandle at pm.911696.pl line 10
So for the time being you should forget about whatever program you're trying to write and work through perlintro to get up to speed.

Read also How do I post a question effectively?

Read this if you want to cut your development time in half!


In reply to Re^3: to interchange line no of file & print by Anonymous Monk
in thread to interchange line no of file & print by harshmane

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.