My mathematical operations in class program

Question

this program is not running please suggest me how to correct it
https://code.sololearn.com/czhBs3vIu17d/?ref=app

Answer 1

I reworked the code the way I'd do it and commented everything out:
https://code.sololearn.com/cOy8Yi55W129/?ref=app

Answer 2

thanks naitomea

Answer 3

No problem.
Do you understand your mistakes or should I explain something again/in detail?

Answer 4

No.
you have already explained it clearly and in easier way