uva has asked for the wisdom of the Perl Monks concerning the following question: 

$line="123 456 789";
@w=unpack('A3A3A3A3',$line);
print "@w";

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its is giving output as 123 45 6 7.actually..unpack('A8',"hello   ");# produces "hello" right why it is not working for the prevoius one.

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Re: help neeed in unpack
by Corion (Patriarch) on Feb 10, 2006 at 07:43 UTC

    unpack counts spaces as characters of their own. You might want the following unpack template:

    $line="123 456 789";
@w=unpack('A3xA3xA3',$line);
print "@w";

    [download]

    Or maybe you just want split:

    my @w = split /\s/, $line;

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