using System;

public class Program

{ class Bill_Details

    {

        string name;

        double unit_Used, Unit_Rate;

        double bill, GST, totalBill;

​

        public Bill_Details(string billName, double Unit_used, double u_Rate)

        {

            this.name = billName;

            this.unit_Used = Unit_used;

            this.Unit_Rate = u_Rate;

​

​

​

        }

​

        public void Cal()

        {

            bill = unit_Used * Unit_Rate;

            GST = bill / 10;

            totalBill = GST + bill;

        }

​

        public void Display()

        {

            Console.WriteLine("This is Name:{0}",name);

            Console.WriteLine("This is Used Unit:{0}",+unit_Used);

            Console.WriteLine("This is Your Unit Rate:{0}",+Unit_Rate);

            Console.WriteLine("This is GST:{0}",GST);

            Console.WriteLine("This is Total Bill:{0}",totalBill);

        }

    }

​

    public static void Main()

    {

        Bill_Details Bill = new Bill_Details("Urvesh", 1500, 3);

            Bill.Cal();

            Bill.Display();

            Console.ReadLine();  

    }

}