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

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            // instance
            Animal dog;
            dog = new Animal("Dogg");

            // initialisation
            Animal cat = new Animal("Kitten");
            cat.age = 5;
            cat.sayHello();

            Console.ReadKey();
        }

        class Animal
        {
            // variables
            string name;
            public int age;

            // constructor
            public Animal(string newName)
            {
                name = newName;
            }

            // functions
            public void sayHello() {
                Console.WriteLine(name + " is trying to say something!");
            }
        }

    }
}