Question

Lab Assignment Objectives:

1. Translate a basic application statement into a software selection solution.
2. Learn how to design and implement a simple program control structure.
3. Use logical operators and boolean variables to set up test conditions.
4. Construct applicable test cases to test your programs for correctness.

Understand the Application

You will obtain a grocery bill total from the customer. Depending on the amount of the grocery bill a coupon rewards amount will be calculated. The user will be informed of the amount of their earned customer rewards coupon.

The Program Specification

Your program will prompt the user for the cost of their groceries.

Then you are to calculate the value of the coupon to be awarded based on the amount of the grocery bill. Use the table below to determine coupon amounts.

Money Spent	Coupon Percentage
Less than $10	0%
From $10 to less than $60	8%
From $60 to less than $150	10%
From $150 to less than $210	12%
From $210 or more	14%

Display an appropriate result message to the user including both the coupon percentage awarded and the dollar amount of their discount coupon.

Testing Requirements

Input Error Checking: You can assume that when it is time for the user to enter a number to represent the amount of his/her day’s grocery bill that a valid numeric value will be typed in. You do not need to test for non-numeric nor negative values.  Note: A numeric 0 input is a valid data entry.

Be sure that your program runs correctly for each of these possible test cases: 0, 10, 70, 160, 222.

Here is a sample run (remember your program needs to work for all possible test case selections; your test run demonstration only needs to show one of the 5 possible test cases):

'''
Please enter the cost of your groceries: 160
You win a discount coupon of $19.20. (12% of your purchase)
'''

Tips and requirements:

1. Create constants versus using literals in your source code.
2. Use a float to represent both the shopper’s grocery bill as well as the coupon amount.
3. Format the discount coupon amount to 2 decimal places (Example: $19.20).
4. Show your program run for one of the test cases: 0, 10, 70, 160, 222. Note: Your program needs to work for all 5 test cases. Your program test run only needs to demonstrate one of the test cases.

python

Answer 1

Here is the code for your problem in PYTHON language

CODE :

NOTE : If you copy the code from answer , please remove comments and check if any dots added(this may occur while you copy) in a black background editor and check indentations twice.

#Creating variable for grocery_bills and asking user to enter bill amount print("Please enter the cost of your groceries: ") grocery_bill = float(input()) #NOTE : float(input()) will convert the bill to floating point #Creating variable for coupon amount , initially set to 0 coupon_amount = 0.00 #Conditions to check for coupons #If the bill amount is less than $10 if grocery_bill >= 0 and grocery_bill <10.00:    #Creating a variable to store discount percentage #If condition true Zero discount will be rewarded discount = 0. #Grocery bill will not change #If the bill amount is from $10 and less than $60    elif grocery_bill <= 10 and grocery_bill <60.00: #8% discount is given discount = 8 #Discount coupon amount is bill amount * discount/100 #This will be converted to float and rounded to 2 decimals coupon_amount = round(float(grocery_bill * (discount/100)),2) #If the bill amount is from $60 and less than $150 elif grocery_bill >= 60.00 and grocery_bill <150.00: #10% discount is given discount = 10 #Discount coupon amount is is bill amount * discount/100 #This will be converted to float and rounded to 2 decimals coupon_amount = round(float(grocery_bill * (discount/100)),2) #If the bill amount is from $150 and less than $210 elif grocery_bill >= 150.00 and grocery_bill <210.00: #12% discount is given discount = 12 #Discount coupon amount is is bill amount * discount/100 #This will be converted to float and rounded to 2 decimals coupon_amount = round(float(grocery_bill * (discount/100)),2) #If the bill amount is from $210 onwards elif grocery_bill >= 210.00: #14% discount is given discount = 14 #Discount cuopon amount is is bill amount * discount/100 #This will be converted to float and rounded to 2 decimals coupon_amount = round(float(grocery_bill * (discount/100)),2) #Printing result print("You win a discount coupon of ${0:.2f} ({1}% of your purchase)".format(coupon_amount,discount)) #We concatinating strings with other data types using format #{} takes values of arguments from format #{0.2f} takes first argument of format and print upto 2 decimals

Please see the screenshots of the code below for indentations.(Python language is strict at indentations)

SCREENSHOTS

OUTPUT

Demonstrating output for the test case - bill amount = 160.

1.The user will enter the value of grocery bill as 160

2.Assuming the user entered valid numerical value(as you mentioned not to test for non-numeric and negative values)

it will be checked against the conditions given above.

3.As 160 is between 150 and less than 210 discount of 12% is calculated on the bill amount 160

4.Formula to calculate discount percentage

FORMULA : discount_amount = (bill amount) * (discount/100)

Here , discount amount is the variable coupon-amount ,

bill amount is the variable grocery_bill,

discount is the variable discount.

For grocery_bill = 160.00

coupon_amount = (160)*(12/100) = 19.20

5.Displays finally the discount amount and discount percentage as

  You win a discount coupon of $19.20(12% of your purchase)

OUTPUTS FOR ALL THE TEST CASES(0,10,70,160,222)