using System;

​

​

public static class ExtInt {

    public static object choose (this int i, Case0 zero, Case1 one) {

        switch (i) {

            case 0: return zero;

            case 1: return one;

            default: throw new Exception();

        }

    }

}

public class Case0 {

    public object value;

    public Case0(object value) { this.value = value; }

}

public class Case1 {

    public object value;

    public Case1(object value) { this.value = value; }

}

public class Program

{

    public static void Main()

    {

        Random rand = new Random();

​

        Console.WriteLine(rand.Next(2).choose(

            new Case0("apple"), 

            new Case1("orange")

        ));

    }

}