I don't get what is going on here

Question

It constantly keeps giving an error msg
https://code.sololearn.com/ctGuq8GWAHcK/?ref=app

Answer 1

Func() method was defined with `int` as the return type. But no `return` statement was issued within its body, that's the problem.

Solution:
Return the calculation result and display it in Main() method

Answer 2

Thanks got it