public static void Main()
string id, fn, ln, sd, ed;
Console.WriteLine("=================================================================================");
Console.Write("input customer id: ");
Console.Write("customer first name: ");
Console.Write("last name: ");
Console.Write("start of customer consumption period (date): ");
Console.Write("end of customer consumption period (date): ");
Console.Write("input customer unit consumption: ");
ec = Convert.ToDouble(Console.ReadLine());
double Surcharge, GrossAmountCharge, NetAmountPaid;
GrossAmountCharge = ec * Charge;
Surcharge = GrossAmountCharge * tax;
NetAmountPaid = GrossAmountCharge + Surcharge;
Console.WriteLine("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++");
Console.WriteLine("electric bill");
Console.WriteLine("Customer id number:...............{0}",id);
Console.WriteLine("Customer last, first name:........{0} {1}",ln,fn);
Console.WriteLine("Starting date:....................{0}",sd);
Console.WriteLine("Ending date:......................{0}",ed);
Console.WriteLine("units consumed:...................{0}",ec);
Console.WriteLine("charge per unit:..................$ {0:f2}",Charge);
Console.WriteLine("gross charges:....................$ {0:f2}",GrossAmountCharge);
Console.WriteLine("surcharge amount:.................$ {0:f2}",Surcharge);
Console.WriteLine("net amount paid by costomer.......$ {0:f2}",NetAmountPaid);
Console.WriteLine("=================================================================================");