Software Development Life Cycle Overview

For many years, your Uncle Frank has been running a small landscaping
business. Through these years, he acquired many steady clients and knew
most of them on a first name basis. Once a month, after completing the
work for that day, he would calculate (on the spot) how much the client
owed for the month with services rendered each week; he would collect
the payment and write a receipt.

His clients were charged various prices. Some clients were given a 10%
discount because they were old friends. Some clients were given a $10.00
discount per lawn because of the amount of their business (5 lawns or
more). New clients just paid the regular advertised price of $35.00 per
lawn.

Recently, your uncle has hired some additional help because he has been
getting older and can't do all the work like he used to. These employees
are good and do a great job on landscaping, but for some reason, they
have a hard time collecting payments. Either they forget to get a
payment or they quote the wrong amount to the client. Your uncle knows
he has to find a solution to this problem quickly; otherwise, he may go
bankrupt.

At the next family gathering, your uncle asked you if you knew of any
solutions for this problem. Since you are in college and taking a
computer course, you know that this problem could easily be solved with
the use of a computer.

After discussing this with your uncle, you agree to set up a computer
and create a program that would keep track of his clients. It would
calculate the bills and print invoices that would be mailed to the
clients. It will also keep track of the client payments when they were
received.

When the clients received their invoices, they would have 30 days to
send in their payment. When the payment was received, the program would
update the account to reflect this payment, but if no payment was
received, then this month's bill would be added to next month's bill
plus a 5% late charge.