The
length issue you encountering comes about because the string you input is terminated with the newline character (\n), hence its length is 5 visible characters plus the newline. If you print $str, you will see the cursor advance a line. You should be able to fix it by inserting the following line after line 7:
chomp $str;
However, it seems like you already knew that, so I can only assume you are using chomp wrong. Since you say that your string ends up with a length of 1, I'd wager your code is
$str = chomp $str; #Wrong!
chomp magically acts upon the arguments and does not require you to reassign.
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