Dynamic Filters

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FilterTest
{
    class Program
    {
        static void Main(string[] args)
        {
            var words = new[] {"apple", "cat", "banana"};
            var filters = new List<Func<string, bool>>();

            filters.Add(WordContainsA);
            filters.Add(WordWordHasAtLeast5Letters);

            var result = words.Where(word => filters.All(filter => filter(word)));
            foreach (var word in result)
            {
                Console.WriteLine(word);
            }

            Console.ReadLine();
        }

        public static bool WordContainsA(string word)
        {
            return word.Contains("a");
        }

        public static bool WordWordHasAtLeast5Letters(string word)
        {
            return word.Length >= 5;
        }

        public static bool WordEndsWithA(string word)
        {
            return word.EndsWith("a");
        }
    }
}