Program to Display the ATM Transaction

/*
* C# Program to Display the ATM Transaction
*/
using System;
class program
{
public static void Main()
{

int amount = 1000, deposit, withdraw;
int choice, pin = 0, x = 0;
Console.WriteLine("Enter Your Pin Number ");
pin = int.Parse(Console.ReadLine());
while (true)
{
Console.WriteLine("********Welcome to ATM Service**************\n");
Console.WriteLine("1. Check Balance\n");
Console.WriteLine("2. Withdraw Cash\n");
Console.WriteLine("3. Deposit Cash\n");
Console.WriteLine("4. Quit\n");
Console.WriteLine("*********************************************\n\n");
Console.WriteLine("Enter your choice: ");
choice = int.Parse(Console.ReadLine());
switch (choice)
{
case 1:
Console.WriteLine("\n YOUR BALANCE IN Rs : {0} ", amount);
break;
case 2:
Console.WriteLine("\n ENTER THE AMOUNT TO WITHDRAW: ");
withdraw = int.Parse(Console.ReadLine());
if (withdraw % 100 != 0)
{
Console.WriteLine("\n PLEASE ENTER THE AMOUNT IN MULTIPLES OF 100");
}
else if (withdraw > (amount - 500))
{
Console.WriteLine("\n INSUFFICENT BALANCE");
}
else
{
amount = amount - withdraw;
Console.WriteLine("\n\n PLEASE COLLECT CASH");
Console.WriteLine("\n YOUR CURRENT BALANCE IS {0}", amount);
}
break;
case 3:
Console.WriteLine("\n ENTER THE AMOUNT TO DEPOSIT");
deposit = int.Parse(Console.ReadLine());
amount = amount + deposit;
Console.WriteLine("YOUR BALANCE IS {0}", amount);
break;
case 4:
Console.WriteLine("\n THANK U USING ATM");
break;
}
}
Console.WriteLine("\n\n THANKS FOR USING OUT ATM SERVICE");
}

}

Coding