Parser or parsing tools?

[Yu Wang]

My name is Yu Wang. Currently I am doing a project which needs to parse
the standard C header files to get the type information about function
prototypes, such as return types and parameters' types. A C parser or
parsing tool which can handle all the C types (including all kinds of
user defined types) may fit my requirements. Anyone has any suggestion on
what I should do to achieve my goal or where I can find such a parser or
parsing tool? Thanks very much in advance.

Yu Wang