using System;

public class Program

{

        private struct MyStruct

        {

            public int Value;

            public readonly int Random;

            public bool Boolean;

​

            public MyStruct(int value)

            {

                Value = value;

                Random=new Random(value).Next();

                Boolean = false;

                Console.WriteLine($"{nameof(MyStruct)} created - Value:{Value} - Random: {Random}");

            }

​

            public void Test()

            {

                Boolean = true;

                Console.WriteLine($"{nameof(MyStruct)} executed - Value:{Value} - Random: {Random}");

            }

        }

        private class MyClass

        {

            public int Value;

​

            public readonly int Random;

            public bool Boolean;

​

            public MyClass(int value)

            {

                Value = value;

                Boolean = false;

                Random = new Random(value).Next();

                Console.WriteLine($"{nameof(MyClass)} created - Value:{Value} - Random: {Random}");

            }

​

            public void Test()

            {

                Boolean = true;

                Console.WriteLine($"{nameof(MyClass)} executed - Value:{Value} - Random: {Random}");

            }            

        }

        private class MyHolder

        {

            public readonly MyStruct StructField;

            public readonly MyClass ClassField;

            public readonly MyStruct StructProperty;

            public readonly MyClass ClassProperty;

​

            public MyHolder(int val1, int val2, int val3, int val4)

            {

                StructField= new MyStruct(val1);

                ClassField= new MyClass(val2);

                StructProperty= new MyStruct(val3);

                ClassProperty= new MyClass(val4);

            }          

        }

        static void Main(string[] args)

        {

            var holder = new MyHolder(1, 2, 3, 4);

            Console.WriteLine(nameof(holder.StructField));

            holder.StructField.Test();

            Console.WriteLine($"{nameof(holder.StructField.Boolean)} - {holder.StructField.Boolean}{Environment.NewLine}");

            Console.WriteLine(nameof(holder.ClassField));

            holder.ClassField.Test();

            Console.WriteLine($"{nameof(holder.ClassField.Boolean)} - {holder.ClassField.Boolean}{Environment.NewLine}");

            Console.WriteLine(nameof(holder.StructProperty));

            holder.StructProperty.Test();

            Console.WriteLine($"{nameof(holder.StructProperty.Boolean)} - {holder.StructProperty.Boolean}{Environment.NewLine}");

            Console.WriteLine(nameof(holder.ClassProperty));

            holder.ClassProperty.Test();

            Console.WriteLine($"{nameof(holder.ClassProperty.Boolean)} - {holder.ClassProperty.Boolean}{Environment.NewLine}");

            Console.WriteLine("Done");

        }

}