roma.cs

using System.Runtime.InteropServices.JavaScript;
using System.Security.Cryptography;

namespace Roma;

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Введите число");
        int arabNumber = Convert.ToInt32(Console.ReadLine());
        
        if (arabNumber < 1 || arabNumber > 3999)
        {
            Console.WriteLine("Неподходящее число: допустимый диапозон от 1 до 3999");
            return;
        }
        
        string romanNumber = "";

            while (arabNumber >= 1000)
            {
                romanNumber += "M";
                arabNumber -= 1000;
            }

            if (arabNumber >= 900)
            {
                romanNumber += "CM";
                arabNumber -= 900;
            }

            while (arabNumber >= 500)
            {
                romanNumber += "D";
                arabNumber -= 500;
            }

            if (arabNumber >= 400)
            {
                romanNumber += "CD";
                arabNumber -= 400;
            }

            while (arabNumber >= 100)
            {
                romanNumber += "C";
                arabNumber -= 100;
            }

            if (arabNumber >= 90)
            {
                romanNumber += "XC";
                arabNumber -= 90;
            }

            while (arabNumber >= 50)
            {
                romanNumber += "L";
                arabNumber -= 50;
            }

            if (arabNumber >= 40)
            {
                romanNumber += "XL";
                arabNumber -= 40;
            }

            while (arabNumber >= 10)
            {
                romanNumber += "X";
                arabNumber -= 10;
            }

            if (arabNumber >= 9)
            {
                romanNumber += "IX";
                arabNumber -= 9;
            }

            while (arabNumber >= 5)
            {
                romanNumber += "V";
                arabNumber -= 5;
            }

            if (arabNumber >= 4)
            {
                romanNumber += "IV";
                arabNumber -= 4;
            }

            while (arabNumber >= 1)
            {
                romanNumber += "I";
                arabNumber -= 1;
            }
            
        Console.WriteLine($"Число в римских цифрах:{romanNumber}");
        return;
    }
    
}