Coming from https://github.com/anthay/Lisp90 lisp90.cpp is a mini Lisp interpreter done by Anthony C. Hay. This new release can perform the Lisp instructions written in the code.txt file, with or without included comments, before the interactive phase.
It is compiled without error by gcc or Visual Studio. The best way to use it is to write wanted Lisp instructions in a text file and then to copy and paste this file inside the code.txt file.
About any more information please see the examples and the original site.