First Program: Spring 2024

1. 1. Create a project in the csc121fa2023 folder using your name. For me, I might choose cathybareiss

1. 1. enter the following (the {YOUR INSTANCE NAME} should be the name you want for the machine such as: BareissProg1

       gcloud compute instances create {YOUR INSTANCE NAME} --image-project csc121f2023sample --image csc121f2023sample --machine-type e2-small

      my example would be:

       gcloud compute instances create BareissProg1 --image-project csc121f2023sample --image csc121f2023sample --machine-type e2-small

      
      You might want to choose a different zone (esp. if you are having problems.)

1. Change the code so that instead of getting two numbers (number1 and number2 it gets a price and an interest rate. Hint if needed. Try first without the hint
2. Change the code so that it computes the interest. Hint if needed. Try first without the hint
3. Change the code so that it computes the total cost. This is very similar to the previous step. Try it without looking at the hint. If you got the previous step, you should be able to get this one. Hint if needed. Try first without the hint
4. Change the code so that it outputs both the interest and the total cost. Hint if needed. Try first without the hint

1. 1. Create a project in the csc121fa2024 folder using your name. For me, I might choose cathybareiss

1. 1. enter the following (the {YOUR INSTANCE NAME} should be the name you want for the machine such as: BareissProg1

       gcloud compute instances create {YOUR INSTANCE NAME} --image-project csc121f2023sample --image csc121f2023sample --machine-type e2-small

      my example would be:

       gcloud compute instances create BareissProg1 --image-project csc121f2023sample --image csc121f2023sample --machine-type e2-small

      
      You might want to choose a different zone (esp. if you are having problems.)

1. Change the code so that instead of getting two numbers (number1 and number2) it gets a price and an interest rate. Hint if needed. Try first without the hint
2. Change the code so that it computes the interest. Hint if needed. Try first without the hint
3. Change the code so that it computes the total cost. This is very similar to the previous step. Try it without looking at the hint. If you got the previous step, you should be able to get this one. Hint if needed. Try first without the hint
4. Change the code so that it outputs both the interest and the total cost. Hint if needed. Try first without the hint

1. 1. 1. a flowchart of the new program (editing the one for the sample program is fine)

1. 1. Create a project in the csc121sp2024 folder using your name. For me, I might choose cathybareiss

1. Change the code so that instead of getting two numbers (number1 and number2) it gets a price and an interest rate. Hint if needed. Try first without the hint

First Program: Fall 2024

Learning Objective(s)

1. Get the environment up and working
2. Enter your first program

Overview of the Program

This lab has two parts. Part one is to create a virtual machine in which you will store all work for this class. Part two is to edit a program to change its functionality a little.

Specifics

Part One

For this part it is ESSENTIAL that you ONLY use your betheluniversity.edu account! Any other account (including a google account) will cause major problems!

1. Follow the instructions to create your virtual machine.
   1. Step one is to redeem the coupon. Be EXTREMELY careful about how you are logged in with your browser!
   2. Create a project in the csc121fa2023 folder using your name. For me, I might choose cathybareiss
   3. invoke the shell
   4. enter: gcloud config set project {your project id (not name)}. For me, that would be cathybareiss
      

       gcloud config set project cathybareiss

   5. enter the following (the {YOUR INSTANCE NAME} should be the name you want for the machine such as: BareissProg1

       gcloud compute instances create {YOUR INSTANCE NAME} --image-project csc121f2023sample --image csc121f2023sample --machine-type e2-small

      my example would be:

       gcloud compute instances create BareissProg1 --image-project csc121f2023sample --image csc121f2023sample --machine-type e2-small

      
      You might want to choose a different zone (esp. if you are having problems.)
2. Remote into it from any machine using remote access. If you are on a Mac, you might need to download an app to allow the Mac to remote into a virtual Windows machine
3. Launch JGrasp

Part Two

1. In the CSC121 folder, you will find a program entitled SimpleCalculator.java. Load a copy of it into JGrasp
2. Change the name of the class to InterestRate and resave it as InterestRate.java
3. Change the code so that instead of getting two numbers (number1 and number2 it gets a price and an interest rate. Hint if needed. Try first without the hint
4. Change the code so that it computes the interest. Hint if needed. Try first without the hint
5. Change the code so that it computes the total cost. This is very similar to the previous step. Try it without looking at the hint. If you got the previous step, you should be able to get this one. Hint if needed. Try first without the hint
6. Change the code so that it outputs both the interest and the total cost. Hint if needed. Try first without the hint
7. Add your name to banner comment as the modifier of the code
8. Save it
9. Test it and make sure it works

Sample dialogue

Below is a sample dialogue. Your output can vary somewhat as long as the required data is nicely displayed

What is the original price?
100
What is the interest rate (10% is 0.1)?
0.15
You will pay 15.0 interest on the item
The total cost will be 115.0

You can also run a solution for this program if you want. See classroom instructions for more details.

Submission

1. Once it works
   1. create a document that contains
      1. your name,
      2. what data you used to test it with
      3. what results you got for each data
      4. three different ways you could use the program
      5. Answers to the following questions:
         1. Did you type in the code or just copy it it in and change it? Why?
         2. Did you use the virtual machine? If not, why not?
         3. What did you learn doing the lab?
         4. In terms of hours and/or minutes, how long did it take you to do the lab
   2. create a pdf document from that document
   3. create an empty zip folder
   4. place only InterestRate.java and your pdf document into it
   5. submit the zip folder on canvas

Optional improvements

Optional improvements should ONLY be worked on once the program is completing working. In addition, the work is to be done on your own with little if any help for lab assistants or the instructor.

1. Make it so it always displays 2 (and only 2) numbers after the decimal point