Use abstract classes and pure virtual functions to design classes to manipulate various types of accounts. For simplicity, assume that the bank offers three types of accounts: savings, checking, and certificate of deposit, as described next. Savings accounts: Suppose that the bank offers two typ
Use abstract classes and pure virtual functions to design classes to manipulate various types of
accounts. For simplicity, assume that the bank offers three types of accounts: savings, checking, and
certificate of deposit, as described next.
Savings accounts: Suppose that the bank offers two types of savings accounts: one that has no minimum
balance and a lower interest rate and another that requires a minimum balance and has a higher
interest rate.
Checking accounts: Suppose that the bank offers three types of checking accounts: one with a monthly
service charge, limited check writing, no minimum balance, and no interest; another with no monthly
service charge, a minimum balance requirement, unlimited check writing and lower interest; and a third
with no monthly service charge, a higher minimum requirement, a higher interest rate, and unlimited
check writing.
Certificate of deposit (CD): In an account of this type, money is left for some time, and these accounts
draw higher interest rates than savings or checking accounts. Suppose that you purchase a CD for six
months. Then we say that the CD will mature in six months. The penalty for early withdrawal is stiff.
Note that the classes bankAccount and checkingAccount are abstract. That is, we cannot instantiate
objects of these classes. The other classes in Figure are not abstract.
bankAccount: Every bank account has an account number, the name of the owner, and a balance.
Therefore, instance variables such as name, accountNumber, and balance should be declared in the
abstract class bankAccount. Some operations common to all types of accounts are retrieve account
owner’s name, account number, and account balance; make deposits; withdraw money; and create
monthly statement. So include functions to implement these operations. Some of these functions will be
pure virtual.
checkingAccount: A checking account is a bank account. Therefore, it inherits all the properties of a
bank account. Because one of the objectives of a checking account is to be able to write checks, include
the pure virtual function writeCheck to write a check.
serviceChargeChecking: A service charge checking account is a checking account. Therefore, it inherits
all the properties of a checking account. For simplicity, assume that this type of account does not pay
any interest, allows the account holder to write a limited number of checks each month, and does not
require any minimum balance. Include appropriate named constants, instance variables, and functions
in this class.
noServiceChargeChecking: A checking account with no monthly service charge is a checking account.
Therefore, it inherits all the properties of a checking account. Furthermore, this type of account pays
interest, allows the account holder to write checks, and requires a minimum balance.
highInterestChecking: A checking account with high interest is a checking account with nomonthly
service charge. Therefore, it inherits all the properties of a no service charge checking account.
Furthermore, this type of account pays higher interest and requires a higher minimum balance than the
no service charge checking account.
savingsAccount: A savings account is a bank account. Therefore, it inherits all the properties of a bank
account. Furthermore, a savings account also pays interest.
highInterestSavings: A high-interest savings account is a savings account.Therefore, it inherits all the
properties of a savings account. It also requires a minimum balance.
certificateOfDeposit: A certificate of deposit account is a bank account. Therefore, it inherits all the
properties of a bank account. In addition, it has instance variables to store the number of CD maturity
months, interest rate, and the current CD month.
Write the definitions of the classes described in this programming exercise and a
program to test your classes.
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