Following up on Converting EBNF to BNF, which has a rule of: From EBNF to BNF For building parsers (especially bottom-up) a BNF grammar is often better, than EBNF. But it's easy to convert an EBNF Gr...

I am making a graphing calculator and the issue I am having is finding a way to take in inputs like sin(90) and run my function for sin that I coded into another file. I am using a recursive descent p...