Answer to Question #241037 in C# for Gayatri

Question

Q2. There is a Change request from the customer. It is as follows:You need to calculate Interest paid by banks on Saving Account.Task 1 : Add a function declaration “void CalculateInterest()” in the interface. Define the functions in the concrete classes such as ICICI accounts get 7% interest and HSBC gives 5% interest.

Answer 1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace BankAccountLibrary
{
    public class ICICI: BankAccount // Inherit this from BankAccount
    {
        private double annualInterestRate = 7.0;


        public ICICI(double amount)
            : base(amount)
        {
            
        }
        public override bool Withdraw(double amount)
        {
            // If Balance – amount is >= 0 then only WithDraw is possible.
            // Write the code to achieve the same.
            if (balance - amount >= 0){
                balance -= amount;
                Console.WriteLine("The amount has been withdrawed.");
                return true;
            }
            return false;
        }




        public override bool Transfer(IBankAccount toAccount, double amount)
        {
            // If Balance – Withdraw is >= 1000 then only transfer can take place.


            // Write the code to achieve the same.
            if (balance - amount >= 1000)
            {
                return (this.Deposit(amount) && toAccount.Withdraw(amount));
            }
            return false;
        }
        public void CalculateInterest()
        {
            if (AccountType == BankAccountTypeEnum.Saving)
            {
                double savingsBalance = balance;
                savingsBalance *= (1 + (annualInterestRate / 100 / 12));
                Console.WriteLine("Balance for HSBC account: {0}", savingsBalance.ToString("C"));
            }
            else {
                Console.WriteLine("Balance for HSBC account: 0.0");
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace BankAccountLibrary
{
    public class HSBC : BankAccount // Inherit this from BankAccount
    {
        private double annualInterestRate = 5.0;
        public HSBC(double amount)
            : base(amount)
        {
            
        }


        public override bool Withdraw(double amount)
        {
            // If Balance – amount is >= 5000 then only WithDraw is possible.


            // Write the code to achieve the same.


            if (balance - amount >= 5000)
            {
                balance -= amount;
                Console.WriteLine("The amount has been withdrawed.");
                return true;
            }
            return false;
        }




        public override bool Transfer(IBankAccount toAccount, double amount)
        {
            // If Balance – Withdraw is >= 5000 then only transfer can take place.


            // Write the code to achieve the same.
            if (balance - amount >= 5000)
            {
                return (this.Deposit(amount) && toAccount.Withdraw(amount));
            }
            return false;
        }


        public void CalculateInterest()
        {
            if (AccountType == BankAccountTypeEnum.Saving)
            {
                double savingsBalance = balance;
                savingsBalance *= (1 + (annualInterestRate / 100 / 12));
                Console.WriteLine("Balance for HSBC account: {0}", savingsBalance.ToString("C"));
            }
            else
            {
                Console.WriteLine("Balance for HSBC account: 0.0");
            }
        }
    }
}