can someone answer it please ( Account Inheritance Hierarchy) Create an inherita

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can someone answer it please

(

Account Inheritance Hierarchy) Create an inheritance hierarchy that a bank might use to

represent customers%u2019 bank accounts. All customers at this bank can deposit (i.e., credit) money into

their accounts and withdraw (i.e., debit) money from their accounts. More specific types of accounts

also exist. Savings accounts, for instance, earn interest on the money they hold. Checking accounts,

on the other hand, charge a fee per transaction (i.e., credit or debit).

Create an inheritance hierarchy containing base class

Account and derived classes Savings-

Account

and CheckingAccount that inherit from class Account. Base class Account should include

one data member of type

double to represent the account balance. The class should provide a constructor

that receives an initial balance and uses it to initialize the data member. The constructor

should validate the initial balance to ensure that it%u2019s greater than or equal to

0.0. If not, the balance

should be set to

0.0 and the constructor should display an error message, indicating that the initial

balance was invalid. The class should provide three member functions. Member function

credit

should add an amount to the current balance. Member function

debit should withdraw money

from the

Account and ensure that the debit amount does not exceed the Account%u2019s balance. If it

does, the balance should be left unchanged and the function should print the message

"Debit

amount exceeded account balance."

Member function getBalance should return the current

balance.

Derived class

SavingsAccount should inherit the functionality of an Account, but also include

a data member of type

double indicating the interest rate (percentage) assigned to the Account.

SavingsAccount

%u2019s constructor should receive the initial balance, as well as an initial value for the

SavingsAccount

%u2019s interest rate. SavingsAccount should provide a public member function

calculateInterest

that returns a double indicating the amount of interest earned by an account.

Member function

calculateInterest should determine this amount by multiplying the interest

rate by the account balance. [

Note: SavingsAccount should inherit member functions credit and

debit

as is without redefining them.]

Derived class

CheckingAccount should inherit from base class Account and include an additional

data member of type

double that represents the fee charged per transaction. Checking-

Account

%u2019s constructor should receive the initial balance, as well as a parameter indicating a fee

amount. Class

CheckingAccount should redefine member functions credit and debit so that they

subtract the fee from the account balance whenever either transaction is performed successfully.

CheckingAccount

%u2019s versions of these functions should invoke the base-class Account version to perform

the updates to an account balance.

CheckingAccount%u2019s debit function should charge a fee

only if money is actually withdrawn (i.e., the debit amount does not exceed the account balance).

[

Hint: Define Account%u2019s debit function so that it returns a bool indicating whether money was

withdrawn. Then use the return value to determine whether a fee should be charged.]

After defining the classes in this hierarchy, write a program that creates objects of each class

and tests their member functions. Add interest to the

SavingsAccount object by first invoking its

calculateInterest

function, then passing the returned interest amount to the object%u2019s credit

function.

Explanation / Answer

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