No suggestions for c++ (never got a readseq in that flavor),but
you can find parts of my sequence classes in java at
http://iubio.bio.indiana.edu/soft/molbio/readseq/java
as readseq-source.zip (see also -api- file there).
- don
--
-- d.gilbert--bioinformatics--indiana-u--bloomington-in-47405
-- gilbertd at bio.indiana.edu