CSSE 120 — Introduction to Software Development

Homework 13

Tasks

1. Read Sections 9.3 of Zelle.

   Read it very carefully to understand the top-down design process. Come to class prepared with questions on anything you do not understand. For Session 15, we will assume that you have read and understood whatever you do not ask about; we will spend most of the class time developing another (and more complex) example to reinforce and extend what you learned by reading.

2. (20 points) Complete the ANGEL quiz, Simulation and Design II over this section. You will find this quiz in the Homework 13 folder on ANGEL.

3. (15 pts) Complete the individual exercise you started in class, listMax.py in the 13-LoopPatterns project.

   Your function listAndMax() should:

   • Prompt the user to enter numbers, one at a time
   • Use a blank line (i.e., just the ENTER key) as a sentinel to terminate input
   • Accumulate the numbers in a list
   • Use a loop to calculate the maximum value of the numbers
   • Return two values:
     1. the list of numbers entered in the order they were entered, and
     2. the maximum value

   You should also define main() so that it:

   • Calls listAndMax()
   • Prints the list of numbers entered
   • Prints the maximum value of the list of numbers

4. (20 pts) Solve Zelle chapter 8, programming problem #9. This is on page 263 of your text.

   1. Write your solution in the module fuelEfficiency.py in the 13-LoopPatterns project.

      A point of clarification: For each leg of the trip, you should enter the current odometer reading and the amount of gas used for that leg. That is, the odometer reading is total for the car ever, but the amount of gas used is per leg.

   2. Test your code and make sure that it works

Turn In

Be sure to commit your code to SVN when you’re finished, or more frequently.