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

namespace Classes {
    class Program {
        abstract class abstracto {
            public class embedded {
                public void NotStatic() {
                    Console.WriteLine("You need an object of abstracto.embedded to call me.");
                }
            };
            public static void VeryStatic(){
                Console.WriteLine("You don't need an object of anything to call me.");
            }
        };
        abstract class abstracti {
            public void NotStatic(){
                Console.WriteLine("You can only call me if you have an object of a class that inherits my class.");
            }
        }
        class test : abstracti {

        }
        static void Main(string[] args) {
            // Making an instance of a class inside an abstract class
            abstracto.embedded aa = new abstracto.embedded();
            aa.NotStatic();

            /* This is invalid because embedded is not abstract and NotStatic is, well, not static:
             * abstracto.embedded.NotStatic(); 
             */

            // You can call a static method inside an abstract class without an object of that class:
            
            abstracto.VeryStatic();

            // Creating an instance/object of a class that inherits an abstract class and thus has all its public/protected members
            test x = new test();
            x.NotStatic();

            /* This is illegal:
             * abstracti.NotStatic();
             * Because non-static members needs an instance of their parent class to be called; and because its in an abstract class,
             * you cannot make an object of its class. But you can make an object of type test which inherits the abstracti class.
             * */
            Console.Read();
        }
    }
}