using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter 3-digit number");

        int n = int.Parse(Console.ReadLine());

        int a;

        int b;

        int c;

        int sum = 0;

        if (n>=100 && n<=999);

        {

            c = n % 10;

            b = (n/10) % 10;

            a = n /100;

            sum = a + b + c;

            if (n%sum==0);

            {

                Console.WriteLine ("{0} can be divided by the sum  of the numbers - {1}",n,sum);

            }

            else

            {

                Console.WriteLine("{0} can't be divided by the sum of the numbers - {1})",n,sum);

            }

        }

        else

        {

            Console.WriteLine("You have input a wrong number! Try again!");

         }

        Console.ReadKey();

​