static void Main(string[] args) { try { UserInterface ui = new UserInterface(); valueMoney = ui.Input(out currency, out convertToCurrency, out usd, out eur, out rub); Converter converter = new Converter(usd, eur, rub); switch (currency) { case 1: ui.Output(converter.ConvertUAH(valueMoney, convertToCurrency)); break; case 2: ui.Output(converter.ConvertEUR(valueMoney, convertToCurrency)); break; case 3: ui.Output(converter.ConvertUSD(valueMoney, convertToCurrency)); break; case 4: ui.Output(converter.ConvertRUB(valueMoney, convertToCurrency)); break; default: break; } } catch (Exception) { } }