I work on aviation software. We have to use C because C++ generates too much code behind the scenes for you. If you don't create a constructor or destructor,

I work on aviation software. We have to use C because C++ generates too much code behind the scenes for you. If you don't create a constructor or destructor, there is an implicit one created. Templates are instantiated once for each type, but we still have to prove that (and test each instantiation). We'd also have to certify a new compiler, since our current one only supports C. My point is basically that in domain-specific cases, C can be a good choice because of the lack of sugar and simplicity. I doubt this applies to most cases though.