Coding style, the ultimate thread.

Language: C
Typedefs: foo_t
Functions: stuff_with_underscores()
Brackets: linux-style ('\n' before '{')

Language: C++
Typedefs for primtive types: foo_t
Class declarations: class FooBar ...
Functions: stuff_with_underscores()
Methods: stuff_with_underscores()
Brackets: linux-style ('\n' before '{')

foo_t
Get the fuck out. You're not a POSIX implementer and you never will be. Use the allowed type naming conventions.