using System;

​

public class Program

{

    public static int howManyDigits(double x,int  y)

    {

        while (x > 1)

        {

            x = x / 10;

            y ++;

        }

        return y;

    }

​

    public static void Main()

    {

        Console.WriteLine("enter the number");

        double n = double.Parse(Console.ReadLine());

        int count =0 ;

        int z =  howManyDigits( n, count );

        Console.WriteLine($"number of digits of the number = { z }");

    }

}