using System;
using System.Linq.Expressions;

public class Test
{
	static T add<T>(T a, T b) {
    var p0 = Expression.Parameter(typeof(T),"a");
    var p1 = Expression.Parameter(typeof(T),"b");
    var ae = Expression.Add(p0, p1);
    var f = (Func<T,T,T>)Expression.Lambda(ae, p0, p1).Compile();
    return f(a, b);
}
	
	public static void Main()
	{
int a = 4, b = 6;
double x = 2.3, y = 5.2;
Console.WriteLine("Sum of two ints = {0}", add(a, b));
Console.WriteLine("Sum of two doubles = {0}", add(x, y));
    }
}