Search a specific element

using System;
using System.Collections.Generic;
using System.Linq;

namespace SearchElement
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] numbers = Console.ReadLine().Split().Select(int.Parse).ToArray();

            int findNumber = 5;

            int index = Array.IndexOf(numbers, findNumber);
            if(index > 0)
            {
                Console.WriteLine(true);
                Console.WriteLine(index);
            }

        }
    }
}