this is functional requirement and do not need to be in language specific. this is for software requirement Specification documents.

Derive the functional requirements associated with the following Process Sale use case in a next generation point of sale application Precondition: Cashier is identified and validated Basic Flow of Events: 1. The use case starts when the cashier starts a new sale for a customer 2. While cashier still enters an item identifier by scanning the bar code 3. System records sale item and displays item description and price End loop 4. System presents the total price, including taxes 5. System asks for the payment method 6. Customer pays 7. System processes the payment 8. System logs the completed sale 9. System sends the sale and payment information to the external Accounting system 10. System sends sale information to the external Inventory system to update the inventory 11. System prints the receipt Alternative Flows 1. At any time, the store manager can perform an override operation to void a sale 2. In step 3, if the item requires manual price entry (flowers, for example), the system shall allow the cashier to enter the special manual category code, and the price of the item 3. In step 4, if the customer has a tax-exempt status(senior code. The system uses the code to correctly calculate the Postconditions: Sale was saved, tax was correctly calculated, citizen, native people,etc), the cashier enters the tax exempt taxes for the purchase accounting and inventory systems were updated, receipt was generated, payment authorization approvals were recorded. Derive the functional requirements associated with the following Process Sale use case in a next generation point of sale application Precondition: Cashier is identified and validated Basic Flow of Events: 1. The use case starts when the cashier starts a new sale for a customer 2. While cashier still enters an item identifier by scanning the bar code 3. System records sale item and displays item description and price End loop 4. System presents the total price, including taxes 5. System asks for the payment method 6. Customer pays 7. System processes the payment 8. System logs the completed sale 9. System sends the sale and payment information to the external Accounting system 10. System sends sale information to the external Inventory system to update the inventory 11. System prints the receipt Alternative Flows 1. At any time, the store manager can perform an override operation to void a sale 2. In step 3, if the item requires manual price entry (flowers, for example), the system shall allow the cashier to enter the special manual category code, and the price of the item 3. In step 4, if the customer has a tax-exempt status(senior code. The system uses the code to correctly calculate the Postconditions: Sale was saved, tax was correctly calculated, citizen, native people,etc), the cashier enters the tax exempt taxes for the purchase accounting and inventory systems were updated, receipt was generated, payment authorization approvals were recorded