Simple functional C# example

FunctionalCSharp.cs

using System;
using Person = System.Tuple<string,string,int>;

namespace FunctionalCsharpExample
{
    class FunctionalCSharp
    {
        static string CompareAge(Person a, Person b)
        {
            if (a.Item3 == b.Item3)
            {
                return "the same age as";
            }
            return a.Item3 > b.Item3 ? "older than" : "younger than";
        }

        static void Main(string[] args)
        {
            var person1 = new Person("Thomas", "Dublin", 23);
            var person2 = new Person("John", "Sligo", 22);
            Console.WriteLine(person1.Item1 + " is " + CompareAge(person1,person2) + " " + person2.Item1);
        }
    }
}