I have always stated that I dislike C++. “Modern C++” (from C++11 on) changed a lot, but the language still has plenty of dark corners. And limits when you would like to achieve easily some goals, but the language reminds you it doesn't work that way, so things can become more complicated than you would like to think.
In Overloading so much I've forgotten C11 and its _Generic I've talked about in Type-generic functions (overloading) in C11.
I suppose that my average readers know what overloading is, but let me give a quick definition: overloading is a feature which allows to reuse (overload) a function name provided that each signature makes each function distinguishable. According to the signature the compiler can pick the right actual code to execute.
As per Michael Stoffregen suggestion in the comment, I've tried to move arguments outside and it worked (even with gcc 4.9.2)! So I can finally say C(11) has Fortran-like function “overloading” — type generic functions.
I have often wondered why C hasn't any kind of function overloading. The typical answer is that we don't want to live with name mangling in C — the hell of the C++ — that would break a lot of things which must stay as they are. I agree… except that you don't need to implement it the C++ way when you have a bright example like Fortran.