using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter number");

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

        Console.WriteLine("Enter number");

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

        int lng= LengthOfNum(x);

        int end= CountOfDigits(x,d,lng);

        Console.WriteLine("the length of the number is {0}",lng);

        Console.WriteLine("the digit appears {0} time",end);

​

    }

    public static int LengthOfNum(int x)

    {

        int l=0;

        while (x>0) l++;

        x=x/10;

        return l;

    }

        public static int CountOfDigits(int x, int d, int l)

        {

            for(int i=0;i<l;i++)

            {

                int k;

                k=x%10;

                if (k==d) l++;

            }

            return l;       

        }

    }

​