Test 1

$ mkdir ~/cs170/tests
$ mkdir ~/cs170/tests/test1
$ cd ~/cs170/test/test1

This portion of the test is worth 30 total points. In addition to this file, you may only access the Python documentation website and the graphics documentation documentation website. NO OTHER WEBSITES ARE PERMITTED. You are also not allowed to access any personal files in your CS account. As usual, you are not allowed to directly copy any code from the Internet or another individual. You should also follow all coding standards discussed thus far.

C++ Activities

Question 9

Create a class called Simulator. This class should have attributes PC, R1, and R2. All three attributes should be integers, and should be defaulted to the value 0. This class should have methods called add and sub, which performs the specified operations on R1 and R2 (in that order, so R1 - R2), and stores the result in attribute R1. Each operation should increment the PC attribute by 1. You should also provide methods called set_R1 and set_R2, which allow the values of R1 and R2 to be set, respectively. Include a print() method which simply prints the values of all of the registers in table format.

  Simulator my_sim;
  my_sim.set_R1(3);
  my_sim.set_R2(4);
  my_sim.add();
  my_sim.print();
  //Prints:
  // R1 7
  // R2 4
  my_sim.sub();
  my_sim.print();
  //Prints:
  // R1 3
  // R2 4

(10 points)

Question 10

Create a class called AdvancedSimulator, which inherits your above definition of Simulator. This should add two additional attributes: R3 and R4. These should also be integers, but their values should be provdied to the constructor. You should define appropriate methods for setting these registers as well. You need to define methods to copy the value from R3 or R4 into R2. These methods should be named following the template copy_R#_to_R2. You also need to add two additional methods: mul and div, which computes the product and quotient (integer!) of R1 and R2 (respectively), and stores them in the R1 attribute. Every one of these operations should increment the PC attribute.

Don't forget to override the print() method so that it can print all 4 registers!

  AdvancedSimulator my_adv_sim(1, 2);
  my_adv_sim.set_R3(2);
  my_adv_sim.set_R1(3);
  my_adv_sim.set_R2(4);
  my_adv_sim.add();
  my_adv_sim.print();
  //Prints:
  // R1 7
  // R2 4
  // R3 2
  // R4 2
  my_adv_sim.sub();
  my_adv_sim.print();
  //Prints:
  // R1 3
  // R2 4
  // R3 2
  // R4 2
  my_adv_sim.copy_R4_to_R2();
  my_adv_sim.print();
  //Prints:
  // R1 3
  // R2 2
  // R3 2
  // R4 2
  my_adv_sim.mul();
  my_adv_sim.print();
  //Prints:
  // R1 6
  // R2 2
  // R3 2
  // R4 2
  my_adv_sim.div();
  my_adv_sim.print();
  //Prints:
  // R1 3
  // R2 2
  // R3 2
  // R4 2

(10 points)

Python Activity

Question 11

Create a file called Gradebook.py which will implement a class called Gradebook. This class should have an attribute which is a dictionary, which will associate the name of a student with a list of grades that student earned. Your class should have a method add_student, which takes a students name as a parameter and adds a new, empty list to the gradebook dictionary. It should also have a method add_grade, which takes a students name, and an integer representing their grade. It should add the grade to the list with the associated student.

You should also have a method get_grades, which takes a students name and returns the list of grades associated with that student.

  gradebook = Gradebook.Gradebook()
  gradebook.add_student("Scotty")
  gradebook.add_student("Bouchard")
  gradebook.add_grade("Scotty", 20)
  gradebook.add_grade("Bouchard", 100)
  gradebook.add_grade("Scotty", 50)
  gradebook.add_grade("Bouchard", 99)
  print(gradebook.get_grades("Scotty")) #Prints: [20, 50]
  print(gradebook.get_grades("Bouchard")) #Prints: [100, 99]

(10 points)

View Bonus

 

Challenge

In a file called Star.py, Create a class that can be used to represent a 6-pointed Star. You need at least attributes for the x and y coordinates of the star, which should be roughly centered on the star. It should also have a method draw, which draws the star using the graphics module.

Create a python program that uses the graphics module and demonstrates that your class is written correctly.

(5 points)

 

Submission

When you have finished, create a tar file of your test1 directory. To create a tar file, execute the following commands:

cd ~/cs170/tests
tar czvf test1.tgz test1/

To submit your activity, go to inquire.roanoke.edu. You should see an available assignment called Test 1. Make sure you include a header listing the authors of the file.

C++ Questionnaire