Application-Level Requirements List

1) The application will display a menu and prompt the user to enter an item name or number, and item quantity.

2) The application will calculate the price and any applicable discount for the item(s).

3) The application will calculate the tax (in this case, a rate of 7.5%) for the item(s).

4) The application will calculate the subtotal, final tax and final total.

5) The application will add any additional items, and recalculate all taxes and totals for those items.

6) The application will display the subtotal, final tax, and final total for the items purchased to the user.

Input-Process-Output Chart

Complete the following input-process-output chart for the application using a structured programming approach.

Hierarchy Chart

Complete a hierarchy chart for the application by typing into the textboxes below.

Flowcharts

Main Module

Get User Input Module

Calculate Item Price, Item Discount Module

Calculate Item Tax Module

Calculate Totals Module

Display Totals Module

Add Item(s) Module

Display New Totals Module

Pseudocode

Main Module

Declare ItemName as Float
Declare ItemQuantity as Integer
Declare ItemPrice as Real
Declare ItemDiscount as Integer
Declare ItemTax as Real
Declare Subtotal as Real
Declare Total as Real
Declare AddItemName as Float
Declare AddItemQuantity as Integer
Declare AddItemPrice as Real
Declare AddItemDiscount as Real
Declare AddItemTax as Real
Declare NewSubtotal as Real
Declare NewTotal as Real
Call Get User Input Module
Call Calculate Item Price, Item Discount Module
Call Calculate Item Tax Module
Call Calculate Totals Module
Call Display Totals Module
Call Add Item(s) Module
Call Display New Totals Module

End Main Module

Get User Input Module

Display “Enter Item Name:”
Input ItemName
Display “Enter Item Quantity:”
Input ItemQuantity

End Get User Input Module

Calculate Item Price, Item Discount Module

If ItemQuantity >= 4 then
ItemDiscount = ItemQuantity (ItemPrice * .10)
ElseIf ItemQuantity < 4 then
ItemPrice = ItemName * ItemQuantity
EndIf

End Calculate Item Price, Item Discount Module

Calculate Item Tax Module

ItemTax = ItemQuantity (ItemPrice * .075)

End Calculate Item Tax Module

Calculate Totals Module

Subtotal = ItemPrice * ItemQuantity
Total = Subtotal * ItemTax

End Calculate Totals Module
Display Totals Module

Display “Your Subtotal is:”
Display ”Your Total is:”

End Display Totals Module

Add Item(s) Module

Call Get User Input Module
Call Calculate Item Price, Item Discount Module
Call Calculate Item Tax Module
Call Calculate Totals Module

End Add Item(s) Module

Display New Totals Module

Display “Your New Subtotal is:”
Display “Your New Total is:”

End Display New Totals Module

-----------------------

Input |Process |Output | |ItemName
ItemQuantity |Get user input. |ItemName
ItemQuantity | |ItemName
ItemQuantity |Calculate ItemPrice, ItemDiscount |ItemPrice
ItemDiscount | |ItemPrice
ItemQuantity |Calculate ItemTax |ItemTax | |ItemPrice
ItemQuantity
ItemTax |Calculate Totals |Subtotal
Total | |Subtotal
Total |Display Totals |Subtotal
Total | |AddItemName
AddItemPrice
AddItemQuantity
AddItemDiscount
AddItemTax |Add Item(s) |NewSubtotal
NewTotal | |NewSubtotal
NewTotal |Display New Totals |NewSubtotal
NewTotal | |

Recalculate ItemPrice and ItemTax

Add Item(s), Quantity, Price, and Tax

Main Module

Display Totals

Add Items

Calculations

Input Data

Begin

Declare ItemName as Float
Declare ItemQuantity as Integer
Declare ItemPrice as Real
Declare ItemDiscount as Integer
Declare ItemTax as Real
Declare Subtotal as Real
Declare TotalTax as Real
Declare Total as Real
Declare AddItemName as Float
Declare AddItemQuantity as Integer
Declare AddItemPrice as Real
Declare AddItemTax as Real
Declare NewSubtotal as Real
Declare NewTotalTax as Real
Declare NewTotal as Real
Call Get User Input Module
Call Calculate Item Price, Item Discount Module
Call Calculate Item Tax Module
Call Calculate Totals Module
Call Display Totals Module
Call Add Item(s) Module
Call Display New Totals Module
End Main Module

End

Begin

Declare ItemName as Float
Declare ItemQuantity as Integer

Display “Enter Item Name:”
Input ItemName
Display “Enter Item Quantity:”
Input ItemQuantity

End

Begin

Declare ItemName as Float
Declare ItemPrice as Real
Declare ItemQuantity as Integer
Declare ItemDiscount as Integer

Is ItemQuantity >= 4?

ItemDiscount =
ItemQuantity (ItemPrice * .10)

Yes

ItemPrice =
ItemName * ItemQuantity

No

End

Begin

Declare ItemPrice as Real
Declare ItemQuantity as Integer
Declare ItemTax as Real

ItemTax =
ItemQuantity (ItemPrice * .075)

End

Begin

Declare ItemPrice as Real
Declare ItemQuantity as Integer
Declare ItemTax as Real
Declare Subtotal as Real
Declare Total as Real

Subtotal = ItemPrice * ItemQuantity

Total = Subtotal * ItemTax

End

End

Display “Your Subtotal is:”
Display “Your Total is:”

Begin

Begin

Declare AddItemName as Float
Declare AddItemQuantity as Integer
Declare AddItemPrice as Real
Declare AddItemDiscount as Real
Declare AddItemTax as Real
Call Get User Input Module
Call Calculate Item Price, Item Discount Module
Call Calculate Item Tax Module
Call Calculate Totals Module

End

End

Display “Your New Subtotal is:”
Display “Your New Total is:”

Begin