[tialaramex]

Some employers are actually far-sighted enough to spend money training their employees.

So e.g. you hire a bunch of fresh graduates who've learned some programming maybe Java and Python, and maybe have other expertise you value (e.g. maybe they're aerospace engineers and you write control software for jet engines) and you spend money hiring somebody capable to stand at the front and teach them how to write C++. It's their job to learn this, so you can do it pretty intensively, e.g. lecture slot / exercises / break / repeat.

C++ is a big sprawling language, but you can make a good start on them in two weeks.

You've presumably worked somewhere with at least some onboarding or spin-up time. Somewhere you weren't employee #1 and responsible for buying your own stationery and cleaning the toilet ? What did you do on day one? Fire training? How to use the CI system? Anti-bribery? Getting your photo taken for an ID badge? Maybe some "easy" first tasks just to learn your way around the systems?

If you have a job where you turn up on day one and are just as productive as a long haul employee, I have terrible news for you - you are the most replaceable person in your organisation and you are going to get fired.