Or you could check out the String::Scanf module on CPAN instead. The
POSIX module (part of the standard Perl distribution) provides the
-C<strtol> and C<strtod> for converting strings to double and longs,
+C<strtod> and C<strtol> for converting strings to double and longs,
respectively.
=head2 How do I keep persistent data across program calls?