In this project, we are going to rewrite our integer calculator in program c#. This time we'll use methods to make our code more streamlined and easier to read. And yes, this means the instructor will be looking at your source code very closely this week! This assignment is a bit odd in that the user requirements are the same as for last week's integer calculator. The new requirements are all internal to your code (i.e., invisible to the user.) We're leaving the decision about what methods to add to your program up to you. We want you to think about which methods make sense to add. Do they make your code easier to understand? Or, do they contain code that is used in multiple places in your program? At a minimum, you must implement and use... A method that takes (and uses) a parameter A method that returns a value (non-void return type).