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

namespace events
{
    delegate void onChange(object handle, EventArgs args);

    class Teplomer
    {
        public event onChange zmena;
        double teplota;

        public double Teplota
        {
            get { return teplota; }
            set
            {
                if (value != teplota)
                {
                    teplota = value;
                    if (zmena != null) zmena(null, null);
                }
            }
        }
    }

    static class Program
    {
        static void Main()
        {
            Teplomer t = new Teplomer();
            t.zmena += delegate(object handle, EventArgs args) { Console.WriteLine("Zmeniala se teplota."); };

            Console.WriteLine("merim");
            t.Teplota = 5;
            Console.WriteLine("merim");
            t.Teplota = 10;
            Console.WriteLine("merim");
            t.Teplota = 10;

            Console.ReadLine();
        }
    }
}