static void Main(string[] args)
 {
     Console.WriteLine("We will convert BDT 1000 to other languages");
     CurrencyContext bdtCurrency = new CurrencyContext(1000);
     CurrencyExpression bdConvert = new BDTConverter();
     bdConvert.interpret(bdtCurrency, "usd");
     Console.WriteLine("After conversion "+bdtCurrency.Output.ToString());
     Console.ReadLine();
 }
        static void Main(string[] args)
        {
            Console.WriteLine("We will convert BDT 1000 to other languages");
            CurrencyContext    bdtCurrency = new CurrencyContext(1000);
            CurrencyExpression bdConvert   = new BDTConverter();

            bdConvert.interpret(bdtCurrency, "usd");
            Console.WriteLine("After conversion " + bdtCurrency.Output.ToString());
            Console.ReadLine();
        }