Using expressions for comparisons

Program.cs

using System;
using System.Linq.Expressions;

namespace expressioncompare
{
    class Program
    {
        static void Main(string[] args)
        {
            var left = Expression.Parameter(typeof(int), "left");
            var right = Expression.Parameter(typeof(int), "right");
            var lt = Expression.LessThan(left, right);
            var lambda = Expression.Lambda<Func<int, int, bool>>(lt, left, right);
            var fn = lambda.Compile();            
            for (var x = 0; x < 5; x++)
            {
                for (var y = 0; y < 5; y++)
                {
                    Console.WriteLine($"{x} < {y} = {fn(x,y)}");
                }
            }
        }
    }
}