JaBa:
The error is not in what you posted.All Arduino sketches are required to have the two functions Setup and Loop defined. Yours obviously doesn't and that's why you are getting the error that These two functions are undefined.
I misunderstood what you meant initially but now understand what you mean! I had commented out my setup and loop functions in a separate file because they were from the professor and using functions I hadn't added yet so they were sending errors. I was able to make it work. Thank you for bringing my attention to these!