//Print every string in the collection with an even number of characters

using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    private static List<string> inputStrings = new List<string>() {

        "a", "ab", "abc", "abcd", "abcde", "abcdef"

    };

    public static void Main()

    {

        try 

        {

            foreach (var even in GetEven())

                Console.WriteLine(even);

        }

        catch

        {

            Console.WriteLine("oops.");

        }

    }

    // don't get mad... get even (strings) 

    public static IEnumerable<string> GetEven()

    {

        var outputStrings = new List<string>();

        /*

        // has written code before

        foreach (var input in inputStrings)

        {

            if (input.Length % 2 == 0)

                outputStrings.Add(input);

        }

        */

        return outputStrings;

        /*

        // has written C# before

        return inputStrings.Where(x => x.Length % 2 == 0);

        */

    }

}