3. a. Design a program for the Hollywood Movie Rating Guide, in which users continuously enter a value from 0 to 4 that indicates the number of stars they are awarding to the Guide's featured movie of the week. The program executes continuously until a user enters a negative number to quit. If a user enters a star value that does not fall in the correct range, reprompt the user continuously until a correct value is entered. At the end of the program, display the average star rating for the movie.
b. Modify the movie-rating program so that a user gets three tries to enter a valid rating. After three incorrect entries, the program issues an appropriate message and continues with a new user.
c. Modify the movie-rating program so that the user is prompted continuously for a movie title until "ZZZZZ" is entered. Then, for each movie, continuously accept star-rating values until a negative number is entered. Display the average rating for each movie.