using System;

using System.Collections.Generic;

​

//給一串自值,進行+1,需考慮到進位該怎麼處理

public class Program

{

    public static void Main()

    {

        int[] digits = {9,9,9};

        int plsNum = 1;

        int sum=0;

        Stack<int> res = new Stack<int>();

        for(var i=digits.Length-1 ; i>=0 ;i--)

        {

            sum = digits[i]+plsNum;

            res.Push((digits[i]+plsNum)%10);

            plsNum = sum/10;

            if(i==0 && plsNum!=0)

                res.Push(plsNum);

        }

        foreach(var j in res)

        {

            Console.WriteLine(j);

        }

    }

}