Activity: Banking System $(35$ points$)$

Task #$1(3$ points$)$

Define one instance for each of stockItem, weightedItem and countableItem and include in the main

function.

Task #$2(2$ points$)$

The derived class does not have direct access to the private data attributes of the superclass. Explain

why we must use the accessor method in stockItem to obtain the price in the calculation of the value.

Include your explanation in the script file.

Task #$3(10$ points$)$

Write class $($BankAccount$)$ that will represent the general bank account object. The data attributes are

name, account balance $($minimum to open an account is $$200).$ Class methods are balance inquiry,

withdraw, deposit, initializer, $\_\_$str$\_\_$ and the accessors and mutators.

Task #$4(10$ points$)$

Write a derived class $($InterestEarningAccount$)$ that will include an additional data attribute: annual

percentage rate $($apr$).$ Provide new accessor and mutator and $\_\_$str$\_\_$ methods and a method to

calculate and add to balance, the interest each month. Use interest $=$ balance$*$apr$/1200$

Task #$5(10$ points$)$

Write a derived class $($CheckingAccount$)$ that will include an additional data attribute: monthly

maintenance fee of $$10$ if the balance is less than $$500,$ otherwise, maintenance fee is $$2.$ Include a

method that will remove maintenance fee from balance each month. Note the maintenance must be

deducted from the balance.