I voted for C because C and C++ wasn't a choice, and I code more towards C than C++. I normally use C++ classes etc to organise my code, and C as the actual meat.
My suggestion is that we standardise on an interface and format between classes, ie, no hungarian C++ classes. Then each person who is coding each class gets to code in whatever way they like, as long as they have the standard interface.
Obviously this would be difficult if the code is in D, VB or Delphi . I'm talking about if we do use C/C++, what styles to use.
Also, just to keep everyone perfect, C is also platform-independant, C is just as fast as C++ and VB is not that much slower than C++. Not unless you get to complex games/apps.