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Rodrigo Chousal16,009 Points
Now make the 'bookTitle' upper case
NSArray *booksArray = @[@"King Lear", @"Hamlet", @"Othello", @"Macbeth"];
NSString *bookTitle = booksArray;
Gareth Borcherds9,372 Points
Adam is correct. To explain it a little further, if you look at what you are doing, you are creating a NSString called bookTitle and assigning it a string from the array booksArray. Now because you are creating an NSString, you have access to the class methods of NSString, which if we look at the documentation:
we see that there is a method to change the string to upper case. We call that method on our string returned from our array and make it all uppercase.