CSci 450-01: Organization of Programming Languages
CSci 503-01: Fundamental Concepts in Languages
Fall 2014

Assignment #2: Supermarket Billing
Revised Deadline: Wednesday, 1 October 2014, 11:59 p.m.

• The Haskell functions yout develop for this assignment should be in a module named Supermarket in a file named Supermarket.hs.
• This assignment requires you to complete several functions from the Supermarket Billing extended exercise from section 6.7 (pages 147-151) of Simon Thompson's Haskell: The Craft of Functional Programming, Third Edition, Addison Wesley, 2011. The instructor will provide you more information on this assignment description. You may download the Haskell file supermarket_base.hs to begin your work.
• All functions in this extended exercise can be implemented using list programming functions from the Prelude and list comprehensions--without directly writing recursive programs. You may use where or let expressions and may define helper functions if needed.
• All students: Implement exercises 6.39 through 6.47.
• CSci 503 students (and optionally CSCI 450 students): Also implement at least one of exercises 6.48 through 6.50.
• Please format and document your program source code appropriately.
• Test your programs appropriately and thoroughly.
• When this assignment is complete, submit your program source code file to Blackboard. Be sure that you identify yourself and the assignments in comments in the source file.
• Also submit a paper copy of the above files at the following class meeting.

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