public static void Main()
Console.WriteLine("===================================================");
Console.Write("how many busses did they order? ");
buses = Convert.ToDouble(Console.ReadLine());
double tax, bus, discount, discounttotal, postdiscount, taxtotal, final;
discounttotal = discount * bus;
postdiscount = bus - discounttotal;
taxtotal = postdiscount * tax;
final = postdiscount + taxtotal;
Console.WriteLine("===================================================");
Console.WriteLine("total pre-taxes and discounts....{0:f2}", bus);
Console.WriteLine("discout deducted.................{0:f2}", discounttotal);
Console.WriteLine("tax added........................{0:f2}", taxtotal);
Console.WriteLine("total amount due.........{0:f2}", final);
Console.WriteLine("===================================================");