In your code they were both undefined and I understood this by reading the code and understanding the error message. Which says clearly there is an undefined value used in a numeric comparison aka ==. There is only one thing that gets compared numerically in that line 
$fix[$k]=1 if ($breakpoint{$chr}{$i}==1);

[download]
Now if that condition is false then $fix[$k] will also be undefined because it is never set to something else elsewhere. But later on you use it in another numeric comparison 
$S[$k]=0 if ($S[$k]<0 || $fix[$k]==1);

[download]
And that triggers the second warning. My fix works so that I check for definedness of the value in the hash and making sure all values in the @fix are defined (either 0 or 1 instead of undefined and 1).


holli

You can lead your users to water, but alas, you cannot drown them.

In reply to Re^3: Use of Uninitialized Value- Multiple Errors by holli
in thread Use of Uninitialized Value- Multiple Errors by hghosh

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.