From: "Augustina Halim" <sby.centrin.net.id at kching_2>

   Hi, buddies, I'm Augustina.
   I have been included in this mailing list and now I want to ask to all of
   you, maybe some of you know about how to convert from numeric to string and
   convert from string to numeric. I really need this function for my project.

If you think about it, these conversions are exactly the same kinds of
things as what the Lisp reader and printer do.  Various standard
functions such as these could be useful:

 read
 read-from-string
 print
 prin1
 princ
 prin1-to-string
 princ-to-string

Also of interest are FORMAT with a NIL stream argument, and the macro
WITH-INPUT-FROM-STRING.