using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var arr = NumbersIn(1234);

        Console.WriteLine(string.Join(", ", arr));

    }

    public static int[] NumbersIn(int value)

    {

        var numbers = new Stack<int>();

​

        for(; value > 0; value /= 10)

        {   

            numbers.Push(value % 10);

            Console.WriteLine(value % 10);

        }

​

        return numbers.ToArray();

    }

}