using System;

public class Program

{

        public static int firstDigit(int n)

        {

​

        while (n >= 10)

            n /= 10;

        return n;

        }

        public static void Main()

        {

            int n;

            Console.Write("Enter Number :");

            n=Convert.ToInt32(Console.ReadLine());

            int i=0;

            while(i<=firstDigit(n))

            {

                Console.WriteLine("Number is :"+n);

                i++;

            }

        }

}

​

​

​