using System;

public class Program // السؤال الموجود في متسيجت ال while .// مشكلة انهاء البرنامج 

{

    public static void Main()

    {

        int num , o , t , h , sum , sumAll =0 ;

        Console.WriteLine("Please enter an intger number of three digit : ");

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

        while( num > 0 )

        {

          while(num>99 && num<1000)

            {

                o = num % 10 ;

                t = ( num / 10 ) % 10 ;

                h = (num / 100 ) % 10 ;

                sum = o + t + h ;

                sumAll = sum + sumAll ;

                Console.WriteLine("The sum of the digit of the number {0} is : {1} ",num , sum );

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

            }

            Console.WriteLine("The number {0} not three digit.\nInsert number : ",num);

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

        }   

        if(sumAll % 5 ==0)

        {

            Console.WriteLine("The sum of all legal numbers digits is {0} and it divided by 5 without remainder ",sumAll);

        }

        else

        {

            Console.WriteLine("The sum of all legal numbers digits is {0} and it does not divided by 5 without remainder ",sumAll);

        }

    }

}