2.2.1 (a) Using variables and constants

John is running a retail store. He wants to apply a discount on a product. What is the purpose of the Discount subroutine in his billing software?

• To calculate the total price of the product

• To calculate the discount rate on the product

• To calculate the discounted price of the product

• To calculate the final price of the product after tax

John is running a retail store. He wants to apply a discount on a product. What are the parameters he should consider in the Discount subroutine?

• Total price of the product and discount rate

• Original price of the product and discount amount

• Amount of the product and discount percentage

• Value of the product and discount ratio

John is shopping during a sale. What is the formula he should use to calculate the discounted price of an item?

• Total price - Discount rate

• Total price * Discount rate

• Total price / Discount rate

• Total price - (Total price * Discount rate/100)

John went shopping and his total bill was $60. He had a discount coupon of 50%. How much did he pay after applying the discount?

• $10

• $20

• $30

• $40

What is the purpose of the 'Main' function in a shopping cart application?

• To calculate the discount on the items in the cart

• To display the final price after applying the discount

• To execute the 'Discount' function that calculates the discount based on the items in the cart

• To initialize variables and constants used in the application

John has 10 apples. He buys 20 more. How many apples does John have now?

• 10

• 20

• 30

• 40

John is running a retail store. He has a subroutine named 'Discount' in his billing software that calculates the discount on the total bill amount. What is the data type of the 'Total' parameter in the 'Discount' subroutine?

• int

• double

• float

• decimal

John is developing a shopping application. He is writing a subroutine named Discount to calculate the discount on a product. What is the data type of the Rate parameter in the Discount subroutine?

• int

• double

• float

• decimal

John runs a retail store and uses a subroutine named 'Discount' in his billing software. What is the data type of the return value of the 'Discount' subroutine?

• int

• double

• float

• decimal

What is the purpose of the Console.WriteLine statement in a program that calculates the total cost of a shopping cart?

• To calculate the total cost of the items in the cart

• To display the total cost to the user

• To execute the calculation subroutine

• To print the receipt