CoffeeScript-like language for C/C++?
stackoverflow.com
stackoverflow.com
Of course, some people will dislike the fact that it is tightly coupled to GObject.
You could also make a C DSL in Haskell if you have time ;):
http://trac.sivity.net/language_c/
Or use an existing one:
In my head, I don't see it as a huge thing like OOC is with garbage collection and all, but a smaller thing that takes care of allocations and for-loops, etc. Just making the code easier to deal with, instead of radically altering it. Doing things for you that you'd do anyhow, but don't really need to see happen.
In my case, there's a game programming library that is C++ that I wanted to use.