Many systems provide the ability to have alternatives to visual or other sensory attributes (such as color or sound) for the purpose of accessibility (for example a picture to be displayed on a web page may have a textual alternative that could be read by a text-to-speech peripheral for the usually impaired). define an interface accessibleguiattribute that contains a single method, getalternativetext, that returns a string representing the textual alternative of an object. getalternatrive accepts no parameters.210)

1. ask the user how many questions are in the quiz. 2. ask the user to enter the key (that is, the correct answers). there should be one answer for each question in the quiz, and each answer should be an integer. e. g., 34 7 13 100 81 3 9 10 321 12 might be the key for a 10-question quiz. you will need to store the key in an array. 3. ask the user to enter the answers for the quiz to be graded. there needs to be one answer for each question. note that these answers do not need to be stored; each answer can simply be compared to the key as it is entered. 4. when the user has entered all of the answers to be graded, print the number correct and the percent correct. 5. add a loop so that the user can grade any number of quizzes with a single key. after the results have been printed for each quiz, ask "grade another quiz? (y/n)." note: you only have one array (the key). you are not creating a new key for each set of quiz answers.