using System;

using System.Linq.Expressions;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("****************** C# Equivalent Output **************************\n\n");

​

        var value = 5;

        Console.WriteLine(-value);

​

        Console.WriteLine("\n\n***************** Expression Tree Output **************************\n\n");

​

        Expression expr = Expression.Negate(

            Expression.Constant(5));

        Console.WriteLine(Expression.Lambda<Func<int>>(expr).Compile()());

    }

}