Find the functions being called in a C file

From: Ahmed S. Badran (ahmed_badran_at_spymac.com)
Date: 05/31/04 

Date: Mon, 31 May 2004 12:55:29 +0300

 Hi,

Is there a tool that would parse a C file and tell me the list of functions
that are being called in the file. The C file includes header files for the
functions being used.

Also is there a tool that would give me a full 'tree' of what functions are
being called from a C file, that is if function A calls function B, which
calls function C, then I need to know that function B & function C are being
called, anything that can do that?

Ahmed 

-- 
"Never interrupt your enemy when he is making a mistake."  - Napolean
Bonaparte