You are converting characters to the integer value of their codepoints with the unpack(), and you end up printing those integers. At some point you need to convert integers back to characters with chr().

The smallest change to fix this problem in your code would probably be to replace the print lines:

#   print "$c";
    print chr($c);
#   print $out $c;
    print $out chr($c);

[download]

An alternative would be to make the whole thing much simpler by treating the line directly without converting to integers at all:

    while (my $line = <$in>) {
        $line =~ s/\n/\r/;  # replace LF with CR in the line
        print $out $line;   # and output it
    }

[download]

In reply to Re: Why Is Writing to a Binary File so Hard? by hv
in thread Why Is Writing to a Binary File so Hard?[SOLVED] by jmlynesjr

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