using System;

public class Test
{
	public static Func<int> GeneraDelegado()
	{
	    int variableLocal = 0;
	    return delegate () { return variableLocal++;};    // Retorna un closure
	}

	public static void Main()
	{
	    Func<int> natural = GeneraDelegado();
	
	    Console.WriteLine (natural());	// 0
	    Console.WriteLine (natural());	// 1
	}
}