You can write OOP-style in C, FP-style in C/C++/Java or even PHP. Sure. Writing pure FP code (pushing all the side effects to the "edges of the program" in C i

You can write OOP-style in C, FP-style in C/C++/Java or even PHP. Sure. Writing pure FP code (pushing all the side effects to the "edges of the program" in C is possible! But it's going to take a lot of discipline from the programmers: there is no safety-net and lots of dreadful boilerplate. Impracticle, but possible.