using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Please enter a number");

        Double f= Double.Parse(Console.ReadLine());

     int u=(int)f;

​

if (u == 0) {

    Console.WriteLine("Num of digits is 1");

​

}

int numDigits = 0;

while(u != 0) {

u = u/10;

numDigits++;

}

Console.WriteLine("Num of digits is" + numDigits);

    }

}