using System;

public class Program

{

    public static void Main()

    {

        double total=0;

        double available=0;

        string str=null;;

        while(str!="logout")

        {

        Console.WriteLine("deposit withdraw total logout");

        string input =Console.ReadLine();

          if(input=="deposit")

          {

            Console.WriteLine("enter the amount to be deposit");

            double d=double.Parse(Console.ReadLine());

             total+=d;

              available=total;

            Console.WriteLine("balance after deposit : "+total);

          }

            if(input=="withdraw")

            {

             Console.WriteLine("enter the amount to be withdrawn");

             double dw=double.Parse(Console.ReadLine());

                if( dw >total)

                {

                    Console.WriteLine("balance not sufficient");

                }

                else if(dw<total)

                { 

                    double d2=total-dw;

                    available=d2;

                    Console.WriteLine("balance after withdraw :"+d2);

                }

                    else if(dw==total)

                { 

                    double d2=total-dw;

                        available=d2;

                    Console.WriteLine("balance after withdraw :"+d2);

                }

            }

           if(input=="total")

           {

            Console.WriteLine("total balance is"+available);

           }

        }

        Console.ReadLine();

    }

}

​