using System;

public class Program

{

        public static void Main()

        {

            int n,x;

            Console.WriteLine("enter n ");

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

            for (int i=1 ; i<=n ; i++)

            {

                Console.WriteLine("enter n times number");

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

                evenCount(x);

                Console.WriteLine(evenCount(x));

            }

    }

        public static int evenCount (int num)

    {

        int count=0 ;

            while (num>0)

            {

                if(num%10%2==0)

                    count++;

                    num=num/10;

            }

            return count ;

    }

}

​

​