using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

            // populate range variable with integers from 0 to 100

            // public static IEnumerable<int> Range(int start, int count)

            IEnumerable<int> range = Enumerable.Range(0, 100);

​

            // filter integers and assign lambda to subset

            // public static IEnumerable<TSource> Where<TSource>

            //      (this IEnumerable<TSource> source, Func<TSource, bool> predicate);

            IEnumerable<int> subset = range.Where(s => s < 50 && s > 40);

​

            // write subset items to console

            foreach (int x in subset)

                Console.WriteLine(x);

​

            //Console.ReadLine();

    }

}