C#_OOP_2a_Program.cs

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

namespace App2a
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(Human.PI);
            // int counter = 0;
            Console.WriteLine("onlyRead is {0}", Human.onlyRead);

            Human person1 = new Human("Stoayn", 50);
            // counter++;
            Human person2 = new Human(20, "Ivan", "Petko", "Nikola");
            // counter++;
            Human person3 = new Human();
            // counter++;

            // person1.onlyRead = 10.1;

//            person1.Name ="Stoyan";
//            person1.Age = 50;

//            person2.Name = "Ivan";
//            person2.Age = 20;

//            Console.WriteLine("My name is {0}. I am {1} years old! My balace is {2}", person1.Name, person1.Age, person1.Balance );
//            Console.WriteLine("My name is {0}. I am {1} years old!", person2.Name, person2.Age);

            Human.Nationality = "German";

            person1.IntroduceYourSelf("verbous");
            Console.WriteLine("I am person1 my best friend is {0}!", person1.GetFriend(0));
            person2.IntroduceYourSelf();
            Console.WriteLine("I am person2 my best friend is {0}!", person2.GetFriend(0));
            person3.IntroduceYourSelf();

            IncreasePopulation();
            IncreasePopulation();

            Console.WriteLine("The population is {0}", Human.counter);

            Console.WriteLine("The National Income is {0}", Human.CalculateNationalIncome());

            Console.WriteLine("Hello World!");
            Console.Read();
        }

        public static void IncreasePopulation()
        {
            Human person1 = new Human("Petko", 15);
        }
    }
}