scan and analyse a c code

Hello 叶千

you might start here[^]. This is a python based c-parser that looks promising to me. I have not used it, though.

There might be several C parsers around (for sure several yacc grammars, e.g. http://www.lysator.liu.se/c/ANSI-C-grammar-y.html[^]). The C language is not so complex to parse compared to C++, C#, etc.

The real challenge starts with the analysis you want to perform on the parsed AST.
It is not clear to me what exactly you want to extract from the "scan".

Cheers
Andi

Ummm... you could write a program to do that I suppose. The problem being that you would essentially be writing a good portion (parser? lexer?) of a C compiler. Beware that the code would need to be pre-processed before you run your analyzer on it or macros would probably cause you trouble.

By writing a LOT of code, essentially half a C compiler.