ITEC 380 2015fall ibarland

home—lectures—recipe—exams—hws—D2L—breeze (snow day; distance)

hw02b
defining functions
hw02b

Due:
Section 01: Sep.14 (Mon) 15:00, on D2L and hardcopy
Section 11: Sep.17 (WedThu) 19:00, D2L.
Your submitted file should be named “hw02b.rkt” as plain-text (which is what DrRacket saves as).

Standard instructions for all homeworks:

• Your name, the assignment-number, and the URL of this assignment must be in a comment at the start of the file.
• Any code which results in syntax errors will generally not earn more than 50% of the points-possible. For grading, I will ignore any commented-out code.
• If your hardcopy is more than 1page, it must be stapled.
• Format well. (In particular, each open-paren should be preceded by a space or start-of-line, for now. E.g. (+ 2 (* 3 4 5)), not ( + 2(* 3 4
  5)
  ).)

It's intended that you complete hw02 (on D2L) before working on this problem.

Follow the design recipe, steps 4,5,7,8. (You don't need to label each step; just turn in the final result.)

1. (15pts) Write the function has-suffix?, which takes in two strings and returns whether or not the first string ends with (the letters of) the second.¹.

   hint:You can certainly use cond (or if) if you like, but they're not actually needed; you can instead use a min or max in a clever (but standard) way.

home—lectures—recipe—exams—hws—D2L—breeze (snow day; distance)

©2015, Ian Barland, Radford University Last modified 2015.Sep.16 (Wed)

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