// Program to demonstrate ATM transaction 
// in C#

using System;

class ATMDemo {
  public static void Main() {
    int totalBalance = 50000;
    int depositAmount = 0;
    int withdrawAmount = 0;

    int option;

    int Atmpin = 0;

    Console.Write("Enter Your ATM Pin: ");
    Atmpin = int.Parse(Console.ReadLine());

    if (Atmpin == 1234) {
      Console.WriteLine("#########Select ATM Service##########\n");
      Console.WriteLine("1. Balance Enquiry\n");
      Console.WriteLine("2. Cash Withdrawal\n");
      Console.WriteLine("3. Deposit your Cash\n");
      Console.WriteLine("4. Exit\n");
      Console.WriteLine("#####################################\n\n");
      Console.Write("Select option: ");

      option = int.Parse(Console.ReadLine());

      switch (option) {
      case 1:
        Console.Write("\nYour Total Account Balanace : " + totalBalance);
        break;
      case 2:
        Console.Write("\nEnter withdrawal amount: ");
        withdrawAmount = int.Parse(Console.ReadLine());

        if (withdrawAmount % 100 != 0) {
          Console.WriteLine("\nPlease enter withdrawal amount in multiple of 100");
        } else if (withdrawAmount > totalBalance) {
          Console.WriteLine("\nIn-sufficient balance in your account");
        } else {
          totalBalance = totalBalance - withdrawAmount;
          Console.WriteLine("\n\nPlease collect your money");
          Console.WriteLine("\nYour remaining balance is: " + totalBalance);
        }
        break;
      case 3:
        Console.Write("\nEnter amount to deposit: ");
        depositAmount = int.Parse(Console.ReadLine());
        totalBalance = totalBalance + depositAmount;
        Console.WriteLine("Your current balance: " + totalBalance);
        break;
      case 4:
        Console.WriteLine("\nInvalid Option");
        break;
      }
    } else {
      Console.WriteLine("Invalid Pin Number");
    }
    Console.WriteLine("\n\nTHANKS FOR USING OUT ATM SERVICE");
  }
}