For your main language, you should definitely be able to do that off the top of your head, but in today's polyglot programming world? How many different langua

For your main language, you should definitely be able to do that off the top of your head, but in today's polyglot programming world? How many different languages can you do that in, in 20 seconds, without looking it up? Personally, I think I can only do it in Python and C off the top of my head without looking. I'd have to look up how to do it, idiomatically, in C++, Rust, Go, Perl, PHP, and Javascript.