hii robby_dobby thanks for the suggestion. have applied those and the code is working without any warnings, but its not producing the output as desired. in the code i have opened config.txt, where you have suggested changes, in config file i have written chipid 1925 subversid 0001 and want only to read numeric value and use them but the code is picking only chipid string and using it. please tell me how should i write the code so that only numeric value is picked from config file please fine the code portion below 

if(open (my $CFILE,"config.txt" ) || die "couldnt open file:", $! ) {
   $readline = <$CFILE>;
   if (defined $readline ) {
        @words = split(/\b[0-9][0-9][0-9][0-9]\b/,$readline);
        $readline = <$CFILE>;
      }
   $cChipId = $words[0];
   $cSubVersId = $words[1];
   print "$cChipId \n";
   print "$cSubVersId \n";
}

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In reply to Re^2: warning: use of uninitialized value by mrityunjaynath
in thread warning: use of uninitialized value by mrityunjaynath

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