[CS134.U02.EX] 🏋️ Python basics – Exercise

CS 134: Programming Fundamentals, Summer 2022

Assignment turn-in link: CANVAS TURN IN

📝 Assignment

Exercises are meant to be solo effort, please try to complete it on your own. You can ask the instructor or a tutor questions if you get really stuck, but all the information you need to complete the assignment is in here, or in the related reading/lectures.

If you get stuck, please post questions in the Unit 2 'Help!' discussion board .

🔧 Setup

FIRST, from your "My Repls" page on Repl.it create a New folder for this weeks' assignments name it Unit02. Within this folder you will create separate Repl projects for each program. When you turn in the assignments, you will copy the URL to your folder as the submission.

🎁 Submitting your work

First, make sure all your programs are inside your Unit02 folder. If they're not you can click on the three dots on the right side of the program name and click "Move".

To submit your work, navigate to the folder for your exercises on replit. Copy the URL to that directory (e.g., https://replit.com/@rsingh13?path=folder/Unit02) and paste it in here in Canvas.

PLEASE GIVE YOUR PROGRAMS THE FOLLOWING NAMES:

  • Unit 02 Program 1
  • Unit 02 Program 2
  • Unit 02 Program 3

Clean code also means the ability to find the code itself, so if your project is unkempt and hard to navigate you will lose points.

Moving an assignment:

Submitting your assignment:

(This video only shows 2 replit projects created, but this is just an example. Create as many projects as there are programs below.)


Once you've turned in the assignment, make sure to also post your program in the code review assignment, [CS134.U02.PR] 🔎 Python basics – Peer Review

💻 Programs

Quick jump: Program 1: Welcomer | Program 2: Sums | Program 3: Area

Program 1: Welcomer

⭐

This program will ask the user to enter some basic information and then display a welcome message. 

Hi Rachel,

Welcome to Summer semester, 2022

Looking forward to having you in CS200!!

Running the program

1. Start off by going to the starter code here: https://replit.com/@rsingh13/CS134U02EX-Program-1#main.py

2. Click on the FORK button () to make a copy of it for your own account.

3. Click the RUN button () to see the program so far.

4. To begin wtih, the program only asks for a name and then says hi:

WELCOMER PROGRAM
---------------------------
What is your name? Rachel
Hi, Rachel!

Modifying the program

We're going to complete the program by asking for additional information. We want to ask the user for the COURSE, the SEMESTER, and the YEAR.

1. Create variables for course, semester, and year. Ask the user to enter values for each of these using the input function.

2. After the user is done inputting all the information, add new print functions to display a message like this:

WELCOMER PROGRAM
---------------------------
What is your name? Rachel
What is the semester? Summer
What is the year? 2022
What is the course? CS134

Hi, Rachel!
Welcome to Summer semester, 2022
Looking forward to having you in CS134!

The values "Rachel", "Summer", "2022", and "CS134" should all come from the variables, so when different people run the program the correct information shows up.

Program 2: Sums

⭐⭐

This program currently takes in 2 numbers and sums them. You will add a third number. 

Enter a first number: 1.1
Enter a second number: 2.2
Enter a third number: 3.3

1.1 + 2.2 + 3.3 = 6.6

Running the program

1. Go to the second program's starter code here: https://replit.com/@rsingh13/CS134U02EX-Program-2#main.py

2. Click on the FORK button to make a copy.

3. Run the program. Currently it takes two numers and adds them together, displaying the result.

SUM!
-----------------
Enter a first number: 4.5
Enter a second number: 7.5

4.5 + 7.5 = 12.0

Modifying the program

Modify the program to add one additional number. Use the existing code for reference. Your final program output should look like this:

SUM!
-----------------
Enter a first number: 4.5
Enter a second number: 7.5
Enter a third number: 1.1

4.5 + 7.5 + 1.1 = 13.1

Program 3: Receipt

⭐⭐⭐

This program you will design and implement on your own.

The program will ask for the following information:

  • The name of the first item being purchased
  • The price of the first item being purchased
  • The name of the second item being purchased
  • The price of the second item being purchased
  • The tax rate (as a decimal, like 0.09 for 9%)

The program will also calculate the following information, given that information:

  • Subtotal
  • Additional tax
  • Final total

And it should display all the information in a nice "Receipt" like format.

RECEIPT
---------------------
What is the name of the first item? Burrito
What is the price of the first item? 1.29

What is the name of the second item? Quesadilla
What is the price of the second item? 3.10

What is the tax rate? 0.09

RECEIPT
Burrito 	$1.29
Quesailla 	$3.10
Subtotal 	$4.39
Tax      	$0.40
Total    	$4.79

Designing the program

Start by designing the program. Use a tool like Dia or draw on paper, but create a flow chart to outline each of the steps needed.

Export your diagram as a PNG or JPG file and make sure to upload it into the corresponding replit project:

If you get stuck, you can post in the 💬 Unit 2 help - Discussion board to brainstorm with your classmates or get hints from the instructor.

Writing the program

Write the program in Python and make sure to test it out. It should also have an easy-to-follow user interface.

You can format currency using a command like this:

print( name1 + " \t" + "${:,.2f}".format( price1 ) )