CurrencyConverter

using System;
class CurrencyConverter
{
    static void Main(string[] args)
    {
        decimal BGN = 1.0M;
        decimal USD = 1.79549M;
        decimal EUR = 1.95583M;
        decimal GBP = 2.53405M;
        decimal inputValue = decimal.Parse(Console.ReadLine());
        string inputCurrency = Console.ReadLine();
        string outputCurrency = Console.ReadLine();

        switch(inputCurrency)
        {
            case "BGN":
                break;
            case "USD":
                inputValue = inputValue * USD;
                break;
            case "EUR":
                inputValue = inputValue * EUR;
                break;
            case "GBP":
                inputValue = inputValue * GBP;
                break;
        }

        switch(outputCurrency)
        {
            case "BGN":
                inputValue = inputValue / BGN;
                break;
            case "USD":
                inputValue = inputValue / USD;
                break;
            case "EUR":
                inputValue = inputValue / EUR;
                break;
            case "GBP":
                inputValue = inputValue / GBP;
                break;
        }

        Console.WriteLine("{0:F2} {1}" , inputValue , outputCurrency);
    }
}