Introduction

Purpose: Last year, JMU introduced a service called JMUsury. The system was originally written in Java. The new version (designated version 1c) must be written in C++.

Background

About the System: JMUsury allow students to save money for graduation.

The service offers three different kinds of accounts (none of which earn any interest):

Fixed Term Savings Account: An account that allows deposits at any time but withdrawals only upon graduation.

Savings Account: An account that allows deposits and withdrawals at any time.

Mixed Savings Account: An account that allows deposits at any time and withdrawals of only a portion of the balance. Specifically, whenever the balance gets above a predetermined limit, the "overage" is moved into an "unavailable balance" that can't be withdrawn from.

Existing Components

The FixedTermSavings account class has already been implemented. The source code is available but must not be modified.

FixedTermSavingsAccount ( Header , Implementation )

New Components

You must develop the following new components:

SavingsAccount ( Design )

MixedSavingsAccount ( Design )

Driver ( Design )

Some Advice:

A Development Strategy: Even though this application is not very large, it will be easier to complete if you divide it into pieces. You should:

1. Stub-out the SavingsAccount class.
2. Implement the SavingsAccount class.
3. Test the SavingsAccount class.
4. Stub-out the MixedSavingsAccount class.
5. Implement the MixedSavingsAccount class.
6. Test the MixedSavingsAccount class.

Testing: At a minimum, you should test your code to make sure that it properly handles:

1. Account numbers for different kinds of accounts.
2. Positive and negative withdrawals.
3. Positive and negative deposits.
4. Deposits to MixedTermSavingsAccount objects that increase the balance above the limit on available funds. (Note: Make sure you test a sequence of deposits and withdrawals, some of which increase the balance above the available limit and some of which do not.)
5. Positive and negative values passed to the MixedSavingsAccount constructor.

Things to Think About: You should read and understand the FixedTermSavingsAccount class. For example, make sure you understand:

1. The use of static attributes.
2. The use of private attributes.
3. The use of protected and public methods.

Late Submission:For this assignment, if your code does not pass the in-lab tests you will have one opportunity to have your code re-tested during the Professor's office hours on the next class-day after the due date (e.g., the Monday immediately after the Friday due date). However, you will incur a penalty of 25% (i.e., you will receive a maximum grade of 75).