Look at what the perl script at http://www.gson.org/egypt/ http://www.gson.org/egypt/ does -- if you are using gcc, you can compile with certain options to gene

Look at what the perl script at http://www.gson.org/egypt/ http://www.gson.org/egypt/ does -- if you are using gcc, you can compile with certain options to generate info from the source code into an intermediate file and then parse this intermediate file with a script to get the info you need. A bit complex, but useful if you are trying to read through code you are maintaining. A compiler is better than a regex for this, I think, for C. Also ctags/etags like another comment mentioned as also the cscope utility.