Write a C# program to count a specified number in a given array of integers

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
public class Exercise45 {
static void Main(string[] args)
    {
            Console.WriteLine("\nInput an integer:");  
            int x = Convert.ToInt32(Console.ReadLine());
            int[] nums = {1, 2, 2, 3, 3, 4, 5, 6, 5, 7, 7, 7, 8, 8, 9};
            Console.WriteLine("Number of " + x + " present in the said array:");
            Console.WriteLine(nums.Count(n => n == x));
    }
}