World2a2bProgramGarbageCollector

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

namespace World2a2b
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Nationality = {0}", Person.Nationality);
            Console.WriteLine("The national income is {0}", Person.CalculateNationalIncome());
            Console.WriteLine("PI = {0}", Person.PI);
            //int counter = 0;
            //List<Person> people = new List<Person>();
            // string name1 = "Ilin";
            // int age1 = 18;

            // string name2 = "Kristiyan";
            // int age2 = 18;

            Person person1 = new Person("Stoyan", 52);
            //counter++;
            //people.Add(person1);
            // 1. fields
            // person1.name = "Ilin";
            // person1.age = 18;
            // 2. getters and setters
            // person1.SetName("Stoyan");
            // person1.SetAge(52);
            // 3. Properties
            // person1.Name = "Stoyan";
            // person1.Age = 52;

            // Console.WriteLine("My name is {0}. I am {1} years old.", person1.name, person1.age);
            // Console.WriteLine("My name is {0}. I am {1} years old.", person1.GetName(), person1.GetAge());

            // Console.WriteLine("My name is {0}. I am {1} years old.", person1.Name, person1.Age);

            person1.IntroduceYourSelf();

            Person person2 = new Person("Ilin", 18);
            //counter++;
            //people.Add(person2);
            // person2.name = "Kritiyan";
            // person2.age = 18;
            // person2.SetName("Kristiyan");
            // person2.SetAge(18);
            // person2.Name = "Ilin";
            // person2.Age = 18;

            // Console.WriteLine("My name is {0}. I am {1} years old.", person2.GetName(), person2.GetAge());
            // Console.WriteLine("My name is {0}. I am {1} years old.", person2.Name, person2.Age);
            person2.IntroduceYourSelf();

            CreateAnotherInstance();

            GC.Collect();

            Person.Nationality = "German";

            person1.IntroduceYourSelf();
            person2.IntroduceYourSelf();

            // Person.Counter = 6;
            // Console.WriteLine("The population of my little kingdom is {0}", people.Count);
            // Console.WriteLine("The population of my little kingdom is {0}", people.Count);
            Console.WriteLine("The population of my little kingdom is {0}", Person.Counter);
            // person2.only4Read = 56.7;
            Console.WriteLine("Only for Read {0}", person2.only4Read);

            Console.WriteLine("The national income is {0}", Person.CalculateNationalIncome());

            // Console.WriteLine("Befor the destructor");
            // while (true)
            // {
            // }

            // upcasting
            Person student1 = new Student("Kircho", 25, 3213213); // new Student("Kircho", 25, 3213213);
            student1.IntroduceYourSelf();

            // downcasting
            // Student student3 = (Student)student1;
            // student3.IntroduceYourSelf();

            // student1 = new Athlete("Krisi", 25, "Box");
            student1.IntroduceYourSelf();
            Person athlete1 = new Athlete("Krisi", 25, "Box");
            athlete1.IntroduceYourSelf();

            Console.WriteLine(athlete1); // .ToString()
        }

        public static void CreateAnotherInstance()
        {
            Person person1 = new Person("Petko", 45);
            // GC.Collect();
        }
    }
}