using System;

public class Program

{

    public class banking

        {

            public static void deposit(int amount, ref int balance, out string transac)

            {

                transac="+"+amount;

                balance+=amount;

            }

            public static void withdraw(int amount, ref int balance, out string transac)

            {

                transac = "-"+amount;

                balance-=amount;

            }

​

        }

​

​

    public static void Main()

    {

        int balance = 10000;

            bool flag = true;

            string[] transac = new string[20];

            int i = 0;

​

            while (flag)

            {

                Console.WriteLine();

                Console.WriteLine("---Banking Application---");

                Console.WriteLine("Select an operation: ");

                Console.WriteLine("[1] WithDraw [2] Deposit [3] Check Balance [4] Transactions [5] Exit");

                int op = Convert.ToInt32(Console.ReadLine());

                banking bank1 = new banking();

                switch (op)

                {

​

                    case 1:

                        Console.WriteLine("Enter the amount to be withdrawed: ");

                        int amount = Convert.ToInt32(Console.ReadLine());

                        banking.withdraw(amount, ref balance, out transac[i]);

                        Console.WriteLine(amount+" has been withdrawn");

                        Console.WriteLine("Current Balance: "+balance);

                        i++;

                        break;

                    case 2:

                        Console.WriteLine("Enter the amount to be deposited: ");

                        int amount1 = Convert.ToInt32(Console.ReadLine());

                        banking.deposit(amount1, ref balance, out transac[i]);

                        Console.WriteLine(amount1+" has been deposited");

                        Console.WriteLine("Current Balance: "+balance);

                        i++;

                        break;

                    case 3:

                        Console.WriteLine("Current Balance: "+balance);

                        break;

                    case 4:

                        Console.WriteLine("Transaction History: ");

                        foreach (string s in transac)

                        {

                            if (s!=null) Console.WriteLine(s);

                        }

                        break;

                    case 5:

                        Console.WriteLine("Thank you for using our services!");

                        flag=false;

                        break;

                }

            }

​

​

    }

}