"Seriously? Which errors? How does adding that text to the start of the OP's program help him solve his problem?"

The errors generated from running the code presented simply when adding use strict; use warnings;. Does the reasoning in Use strict and warnings not ring true to you?

"As opposed to opening the files he wants to read, as he does already?"

Without returning $! on error, I'd advise getting into the habit of using 3 argument open, safer, cleaner.

From their previous posts they do these things in some examples, and not in others, the coding style is different suggesting they're copying and pasting code from elsewhere, don't understand what it's doing and post 'problems' here.

If the goal is to encourage someone who doesn't seem to understand the basics of the language to actually learn the language, how best to avoid or report errors the advice you question still seems sound to me.

In reply to Re^5: difference between two files by marto
in thread difference between two files by varalaxmibbnl

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.