Challenge 3: Implement a Banking Application Using Polymorphism

Problem Statement

Write a code that has:

• A base class named Account.

  • Inside it define:
    • A field, private double _balance
    • A protected property, Balance, to access the balance
    • public virtual bool Withdraw(double amount)
    • public virtual bool Deposit(double amount)
    • public virtual void PrintBalance()

• Then, there are two derived classes

  • SavingsAccount class has:

    • A private field _interestRate set to 0.8

    • An overridden Withdraw() method that deducts amount from balance with interestRate only if enough balance is available. The withdrawal amount should be greater than zero.

      • Returns true if the transaction was successful and false otherwise.

    • An overridden Deposit() method that adds amount to balance with interestRate and also checks if the amount to be deposited is greater than zero

      • Returns true if the transaction was successful and false otherwise.

    • PrintBalance() displays the balance in the account

  • CheckingAccount class has:

    • An overridden Withdraw() method that deducts amount from balance only if enough balance is available and the withdrawal amount should be greater than zero

      • Returns true if the transaction was successful and false otherwise.

    • An overridden Deposit() method that adds amount in balance and also checks if the amount to be deposited is greater than zero

      • Returns true if the transaction was successful and false otherwise.

    • PrintBalance() displays the balance in the account

For SavingsAccount:

$$Withdrawal Formula: Balance = Balance - (amount + (amount * interest rate))$$

$$Deposit Formula: Balance = Balance + (amount + (amount * interest rate))$$

Input

• In the Savings class, Balance is set to 5000 using the base() parametrized constructor
• In the Current class, Balance is set to 5000 using the base() parametrized constructor

Output

• Balance before withdrawal from the savings account

• Balance after withdrawal from the savings account

• Balance before withdrawal from the current account

• Balance after withdrawal from the current account

Sample Input

   Account SAccount = new SavingsAccount(5000);

   // creating saving account object
   SAccount.Deposit(1000);
   SAccount.PrintBalance();

   SAccount.Withdraw(3000);
   SAccount.PrintBalance();


   // creating checking account object
   Account CAccount = new CheckingAccount(5000);
   CAccount.Deposit(1000);
   CAccount.PrintBalance();

   CAccount.Withdraw(3000);
   CAccount.PrintBalance();
 

Sample Output

   The saving account balance is: 6800
   The saving account balance is: 1400

   The checking account balance is: 6000
   The checking account balance is: 3000