This is your chance to become the instructor. after learning the looping and input validation concepts, create a problem to give to your students to allow them to practice the looping and input validation concepts. the problem should include at least two different decision structures and a loop. the number of times to process the loop is stated in the problem definition. the decision structures should be chosen from the simple, combined, nested and case structures. use the programming exercise problems at the end of chapter 5 as an example.