Write a function that, given a users name and a books title, returns the rating that the user gave for that book.

• Your function MUST be named getRating.

• Your function should take 6 input arguments in the following order:

  • string: username

  • string: title of the book

  • Array of User objects: users

  • Array of Book objects: books

  • int: number of users currently stored in the users array

  • int: number of books currently stored the books array

• The username and book title search should be case insensitive. Ben, ben and BEN are one and the same user.

• If both the user name and the book title are found in the arrays, then the function should return the users rating value for that book title.

• The function should return the following values depending on cases:

  • Return the rating value if both user and title are found

  • Return -3 if the user or the title are not found