Write a program for the LMC environment that takes a variable number of user inputs until the user enters 0. The program then prints out the sum of the user inputs. For example, if the user enters 5, 1, 11, 12, 2 and 0, then the program returns 31. If the user enters 2, 1 and 0, the program returns 3. Write a short (one paragraph, 150 words max.) explanation how the sum was arrived at. In the document, provide a screenshot showing your code and the corresponding output.