How would I make C++ ask for 3 different variables then calculate it then ask for a new variable until you escape the loop?

Question

https://code.sololearn.com/ceKM035ctTlk/?ref=app

Answer 1

https://code.sololearn.com/cDBkQ05LIIiP/?ref=app

Answer 2

ahh, I see what I was doing wrong. Thank you @Bazarkhooneh.com