C#_OOP_2b_Human.cs

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

namespace OOP9
{
    class Human
    {
        string name;
        int age;
        Brain brain;

        public const string PLANET = "Earth";
        public static readonly string humanType = "HomoSapiens";

        // public const int Large = 1400;
        // public const int Normal = 1350;
        // public const int Small = 1200;

        public enum BrainSize { Large = 1400, Normal = 1350, Small = 1300}

        public Human()
            : this("Default", 0, BrainSize.Small)
        { }

        public Human(string name, int age, BrainSize brainSize)
        {
            this.name = name;
            this.age = age;
            this.brain = new Brain((int)brainSize);
        }

        public void Speak()
        {
            Console.WriteLine("I am {0}. I am {1} years old. My brain tells me {2}", name, age, brain.Think());
        }

        public class Brain
        {
            int size;

            public Brain(int size)
            {
                this.size = size;
            }

            public string Think()
            {
                if (size >= (int)BrainSize.Small) // access to all static members
                {
                    return "smart";
                }
                else
                {
                    return "dumm";
                }
            }
        }

    }
}