What programming languages are context-free?

Question

Or, to be a little more precise: which programming languages are defined by a context-free grammar?

From what I gather C++ is not context-free due to things like mac

Answer 1

Most of the modern programming languages are not context-free languages. As a proof, if I delve into the root of CFL its corresponding machine PDA can't process string matchings like {ww | w is a string}. So most programming languages require that.

Example:

int fa; // w
fa=1; // ww as parser treat it like this