I have no idea what common sense has to do with C.. (Or rather why something shouldn't be, just because someone did it in C differently).

(For the record, I avoid C/C++ like the plague, or try to..)
Not everyone *can* write code that works, much less code that is maintainable, usable etc. Obfuscating for the sake of it never appealed to me.
We do take time here and define our interfaces (between products+components) - it saves lots of hassle later.

C.