A super market

A super market wants you to write a program for their automatic checkout machine. The program should do the following:
1. Display a welcome message.
2. Ask customer for any discount cards.
3. Check to see that customer has placed items in presale position.
3. Ask customer to scan first item.
a. Display price
4. Continue to prompt customer for additional items to be scanned.
a. Display all prices
b. Display total price
5. When scanning done check to see that number of scanned items equals the number of items in presale position.
6. If there are less items in the scanned position than the presale position, ask customer to place missing item on
scanner.
7. If customer refuses to do this after 1 minute call attendant.
8. Add 7% sales tax
a. Add to total
9. When all items scanned ask custmer for method of payment.
a. If card ask whether credit or debit.
1. If credit ask for ZIP code
2. Compare with known ZIP code
a. ZIP should be known from customer discount card
3. If debit ask for PIN
a. PIN should be on discount card.
b. If cash
1. Ask customer to submit coins first.
a. Machine should give program a signal for the following:
1. Slot 1 detects pennies.
2. Slot 2 detects nickels.
3. Slot 3 detects dimes.
4. Slot 4 detects quarters.
5. Slot 5 detects half dollars
6. Slot 6 detects silver dollars.
2. Ask customer to submit paper money second.
a. Machine should give program a signal for the following:
1. Camera 1 detects ones and compares to stored image
2. Camera 2 detects fives and compares to stored image
3. Camera 3 detects tens and compares to stored image
4. Camera 4 detects twenties and compares to stored image
5. Camera 5 detects fifties and compares to stored image
6. Camera 6 detects hundreds and compares to stored image
9. At each stage of payment, the amount deposited should be deducted from the total due.
a. If change is due customer program should send signal to perform the following:
1. If amount due is greater than or equal to one hundred dollars send signal to hundred dispenser
a. Deduct from change due
2. If amount due is greater than or equal to fifty dollars send signal to fifty dispenser
a. Deduct from change due
3. If amount due is greater than or equal to twenty dollars send signal to twenty dispenser
a. Deduct from change due
4. If amount due is greater than or equal to ten dollars send signal to ten dispenser
a. Deduct from change due
5. If amount due is greater than or equal to five dollars send signal to five dispenser
a. Deduct from change due
6. If amount due is greater than or equal to one dollar send signal to one dispenser
a. Deduct from change due
7. If amount due is greater than or equal to fifty cents send signal to fifty cent dispenser
a. Deduct from change due
8. If amount due is greater than or equal to 25 cents send signal to 25 cent dispenser
a. Deduct from change due
9. If amount due is greater than or equal to 10 cents send signal to 10 cent dispenser
a. Deduct from change due
10. If amount due is greater than or equal to five cents send signal to five cent dispenser
a. Deduct from change due
11. If amount due is greater than or equal to one send signal to one cent dispenser
a. Deduct from change due

10. When transaction done display a thank you message and print a receipt.
11. Receipt should contain the following:
a. List of all items purchased and price
b. The tax added.
c. Any store specials
d. A phone number for complaints.
e. A customer satisfaction survey.
f. A warm closing