CSSE 120 — Introduction to Software Development

Homework 4

1. Complete the assigned reading for the next session: Zelle, §4.1–4.4.
2. (20 points) In Angel, complete the Reading Quiz over the above reading.

3. (20 points) With your pair-programming partner, complete the following two modules that you began in class:

   • factorial.py
   • barChart.py

   These are both in today's Eclipse project 04-ReviewAndPractice.

   • You must do these with your pair-programming partner.

   • Obey the pair-programming advice that we discussed in class. It provides:

     • Advice for how to be successful in pair-programming.
     • What to do if you feel that you cannot do this assignment with your pair-programming partner (e.g., if you missed class and don't have a partner).
     • How to ensure that your project is graded and returned to both partners.

4. (20 points — 10 for each module) Working individually (but getting help if you’re stuck), complete the following two modules that you may have began in class:

   • bullseye.py
   • sumAndCount.py (this one has two functions for you to implement, in addition to main)

   These are both in today's Eclipse project 04-ReviewAndPractice.

   • Instructions for each are in the module.
   • Simply do the TODO's in the module, in the order listed (1, 2, 3, ...).
   • You can navigate to the TODO's easily if you do

        Window ~ Show View ~ Tasks
     

   • One of the two functions in sumAndCount.py is countIntegers. Please attempt this function. However:

     • You will find that you need an IF statement. Informally, you want the body of your loop to say:

       If the sine of this integer is less than x, make my count go up by 1.

     • In Python, you write that IF statement like this, assuming that k is your loop variable and count is your accumulator variable:

            if math.sin(k) < x:
                 Put a statement here that makes count go up by 1. 
       

       Give it a try. If you have troubles with it, email

            csse120-staff.rose-hulman.edu
       

       Also, don't forget that you need (at the TOP of the module)

            import math
       

       for the sine function, if you write it in its long form as above: math.sin(...). Or you can do

            from math import sin
       

       if you would rather just write sin(...).

   Turn in your work by committing it to SVN.