Question

Perform a desk check for each case and verify that the algorithm produces the expected results. A template is attached to use for the desk check. (Please help me with this) An ATM allows a customer to withdraw a maximum of $500 per day. If a customer withdraws more than $300, the service charge is 4% of the amount over $300. If the customer does not have sufficient money in the account, the ATM informs the customer about the insufficient funds and gives the customer the option to withdraw the money for a service charge of $25.00. If there is no money in the account or if the account balance is negative, the ATM does not allow the customer to withdraw any money. If the amount to be withdrawn is greater than $500, the ATM informs the customer about the maximum amount that can be withdrawn. Here is an algorithm that allows the customer to enter the amount to be withdrawn, checks the total amount in the account, dispenses the money to the customer, and debits the account by the amount withdrawn and the service charges, if any:

Get balance

Write “Your current balance is $”, balance

Write “Enter amount to withdraw: “

Get amount

Set serviceFee = 0

If (amount >= 500)

Write “Cannot withdraw more than $500 per day”

Set amount = 0

Else if (balance <= 0)

Write “Balance at or below 0”

Set amount = 0

Else if (amount > balance)

Write “Insufficient funds, $25 service charge will apply, continue (y/n)?”

Get option

If (option = ‘y’)

Set serviceFee = serviceFee + 25

else

Set amount = 0

If (amount > 300)

Set serviceFee = serviceFee + (amount – 300) * .04

If (amount > 0)

Set balance = balance – amount – seviceFee

Write “Amount dispensed: $”, amount

Write “Service fees charged: $”, serviceFee

Write “New balance: $”, balance

Else

Write “Transaction cancelled”

Here is a white box text plan for this algorithm:

Case	Description	balance	withdrawal	total service charges	new balance
1	Withdrawal over daily limit	500	600	0	500
2	Balance below 0	-10	100	0	-10
3	Sufficient funds, withdrawal within limit	500	100	0	400
4	Sufficient funds, withdrawal over limit	500	350	2	148
5	Insufficient funds, customer withdraws, withdrawal over limit	300	350	27	-77
6	Insufficient funds, customer does not withdraw, withdrawal within limit	100	150	0	100

For each case complete the table

Case ______________________________________________________

Statement	balance	amount	serviceFee	option	Selection Test	Message

Answer 1

Below are the desk checks for all the given test cases:

This completes the requirement. Let me know if you have any queries.

Thanks!