Converting integers to roman numerals

Question

I\'m trying to write a function that converts numbers to roman numerals. This is my code so far; however, it only works with numbers that are less than 400. Is there a quick

Answer 1

Here's my effort, built with extension in mind and hopefully easy to understand, probably not the fastest method though. I wanted to complete this as got as part of interview test(which was very demoralising), requires an understanding of the problem first though in order to tackle it.

It should do all numbers, can be checked on here https://www.calculateme.com/roman-numerals/from-roman

        static void Main(string[] args)
    {

        CalculateRomanNumerals(1674);
    }

    private static void CalculateRomanNumerals(int integerInput)
    {
        foreach (var item in Enum.GetValues(typeof(RomanNumerals)).Cast().Reverse())
        {
            integerInput = ProcessNumber(integerInput, item);
        }

        Console.ReadKey();
    }

    private static int ProcessNumber(int input, int number)
    {
        while (input >= number)
        {
            input -= number;
            Console.Write((RomanNumerals)number);
        }

        return input;
    }

    enum RomanNumerals : int
    {
        I = 1,
        IV = 4,
        V = 5,
        IX = 9,
        X = 10,
        L = 50,
        XC = 90,
        C = 100,
        CD = 400,
        D = 500,
        CM = 900,
        M = 1000
    }