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

namespace BankingTransaction
{
    class Program
    {
        public static void Main(string[] args)
        {
            int amount = 1000000, deposit, withdraw, payment, al1, al2, al3,al4;
            int bank_acct;
            int password;
            int ebills = 8000;
            int wbills = 8000;
            int sbills = 8000;
            int ccard = 8000;

            Console.WriteLine("Enter your account number:");
            bank_acct = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Enter your password: ");
            password = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("1.BALANCE INQUIRY:\n");
            Console.WriteLine("2.DEPOSIT:");
            Console.WriteLine("3.WITHDRAW:");
            Console.WriteLine("4.PAYBILLS:");
            Console.WriteLine("5.EXIT\n");
            while(true) {

                    int a = int.Parse(Console.ReadLine());
                    Console.WriteLine("-----------------------------");


                    switch (a) {

                        case 1:
                            Console.WriteLine("Your balance inquiry is: {0}", +amount);
                            break;

                        case 2:
                            {
                            Console.WriteLine("Enter amount to deposit:");
                            deposit = int.Parse(Console.ReadLine());
                            amount = amount + deposit;
                            Console.WriteLine("Your balance is {0}", + amount);
                            }break;

                        case 3:
                            {
                                Console.WriteLine("Enter amount to withdraw:");
                                withdraw = int.Parse(Console.ReadLine());
                                amount = amount - withdraw;
                                Console.WriteLine("Your balance is {0}", +amount);
                            } break;


                        case 4:
                             Console.WriteLine("Choose bills to pay");
                             Console.WriteLine("1. Electric Bill:");
                             Console.WriteLine("2. Water Bill:");
                             Console.WriteLine("3. School Fees:");
                             Console.WriteLine("4. Credit Card:");
                             int p = int.Parse(Console.ReadLine());
                             Console.WriteLine("-----------------------------");

                             switch (p)
                             {

                                 case 1:
                                     Console.WriteLine("Your electric bills is {0}", ebills);
                                     Console.WriteLine("Enter amount to pay:");
                                     payment = int.Parse(Console.ReadLine());
                                     Console.WriteLine("Your payment has been successfully transacted");
                                     al1 = ebills - payment;
                                     Console.WriteLine("The payment left is: {0}", al1);
                                     break;

                                 case 2:
                                     Console.WriteLine("Your water bills is {0}", wbills);
                                     Console.WriteLine("Enter amount to pay:");
                                     payment = int.Parse(Console.ReadLine());
                                     Console.WriteLine("Your payment has been successfully transacted");
                                     al2 = wbills - payment;
                                     Console.WriteLine("The payment left is: {0}", al2);
                                     break;

                                 case 3:
                                     Console.WriteLine("Your school bills is {0}", sbills);
                                     Console.WriteLine("Enter amount to pay:");
                                     payment = int.Parse(Console.ReadLine());
                                     Console.WriteLine("Your payment has been successfully transacted");
                                     al3 = sbills - payment;
                                     Console.WriteLine("The payment left is: {0}", al3);
                                     break;

                                 case 4:
                                     Console.WriteLine("Your credit card is {0}", ccard);
                                     Console.WriteLine("Enter amount to pay:");
                                     payment = int.Parse(Console.ReadLine());
                                     Console.WriteLine("Your payment has been successfully transacted");
                                     al4 = ccard - payment;
                                     Console.WriteLine("The payment left is: {0}", al4);
                                     break;

                             }
                                    break;

                        case 5:
                            {Console.WriteLine("Exit\n");
                            }break;


           }
         }
       }
    }
  }