Hi sugar,

If I understood your requirement correctly, the below coding which is slightly modified form of yours will work. But you can do the same in more simple way.

use strict;
use warnings;

my ($head);

while(<DATA>){
     my ($x, $str, $len, $s);
     $s = $_;

     if($s=~m/^>/){
        chomp($s);
        ($head)=(split(/ /,$s))[0];
     }
     else{ 
        chomp($s);
        $len=length($s);
     }
     print "$head length=$len\n$s\n" if($s !~m/^>/);
}

__DATA__
>IDnumber1 length=350
AGCTG
>IDnumber2 length=350
AGAACGT
>IDnumber3 length=350
AGC


output:
-------
>IDnumber1 length=5
AGCTG
>IDnumber2 length=7
AGAACGT
>IDnumber3 length=3
AGC

[download]

Prasad

In reply to Re: printing the length of string variables by prasadbabu
in thread printing the length of string variables by sugar

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.