Is there a standalone C++ source preprocessor? [closed]

Answer 1

http://mcpp.sourceforge.net/

mpp portable c preprocessor:

mcpp project was selected as one of the year 2002 "Exploratory Software Projects" at Information-Technology Promotion Agency, Japan (IPA), and selected again for the year 2003 projects. For the achievements of the project, the author was evaluated as one of the highest class programmers<<