Homework Assignment 5

Due: November 20th (at the beginning of class)

• Do exercise 13.31 on pages 479-480. In addition to the parts (a)-(c) listed there, do the following part (d): The object contains four normal images and an integer in the range 0 to 3. The four images are all four rotations of the original, and the integer specifies which one is currently active. The mutator just updates the integer, as in parts (b) and (c). The selector retrieves one of the four images, using the integer to select which.
• Do exercise 13.35 on page 483.
• Do exercise 14.14 on page 513. Note that one of the errata listed on the textbook's web page is in this exercise; be sure to do the corrected version.
• Do exercise 14.17 on page 514
  Note: In this last problem, you needn't actually add the classes; instead, you should describe the class hierarchy that would result. Briefly explain why your new classes would be useful, by indicating what commonality among their subclasses they capture that is not shared by their entire superclass. Also, note that you will need to first read and think about exercise 14.16 on page 513.