Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AbstractFactory
{
class Program
{
    /// <summary>
    /// The Abstract Factory pattern provides an interface for creating related families of objects
    /// without needing to specify the concrete implementations.  This pattern is critical for ideas
    /// like Dependency Injection.
    /// </summary>
    /// <param name="args"></param>
    static void Main(string[] args)
    {
        Console.WriteLine("Who are you? (A)dult or (C)hild?");
        char input = Console.ReadKey().KeyChar;
        RecipeFactory factory;
        switch(input)
        {
            case 'A':
                factory = new AdultCuisineFactory();
                break;

            case 'C':
                factory = new KidCuisineFactory();
                break;

            default:
                throw new NotImplementedException();

        }

        var sandwich = factory.CreateSandwich();
        var dessert = factory.CreateDessert();

        Console.WriteLine("\nSandwich: " + sandwich.GetType().Name);
        Console.WriteLine("Dessert: " + dessert.GetType().Name);

        Console.ReadKey();
    }
}
}