Comment by IshKebab
18 hours ago
I interviewed at an investment bank in London and they asked me pretty hard questions. One was to implement some multithreaded producer consumer thing in C++. I can't remember the details but it was... well you know how writing multithreaded C++ is. I was allowed to look up references at least. Took me maybe 20 minutes and the whole time the interviewer was just sitting on his phone while I wrote it.
Weird experience. Didn't get that job (probably for the best tbf).
If you wrote an MPSC queue (standard question) with multithreaded demo in 20 minutes in C++ you’re pretty hot shit, mate. Their loss. It’s not that it’s hard. But that speed without error is just really good. C++ is particularly unforgiving too.
He didn't get the job so changes are it wasn't correct.
I can't remember the exact problem or how long it took but it was definitely some awkward multithreading. I'd rate my C++ as pretty good but probably not hot shit!