Concatenate delegates example

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

namespace DelegatesAndEvents
{
    public delegate int WorkPerformedHandler(int hours, WorkType workType);

    class Program
    {
        static void Main(string[] args)
        {
            WorkPerformedHandler del1 = new WorkPerformedHandler(WorkPerformed1);
            WorkPerformedHandler del2 = new WorkPerformedHandler(WorkPerformed2);
            WorkPerformedHandler del3 = new WorkPerformedHandler(WorkPerformed3);

            //+= concatenate
            del1 += del2 + del3;

            int finalHours = del1(10, WorkType.Golf);
            Console.WriteLine(finalHours);

            Console.Read();
        }


        static int WorkPerformed1(int hours, WorkType workType)
        {
            Console.WriteLine("WorkPerformed1 called " + hours.ToString());
            return hours + 1;
        }

        static int WorkPerformed2(int hours, WorkType workType)
        {
            Console.WriteLine("WorkPerformed2 called " + hours.ToString());
            return hours + 2;
        }

        static int WorkPerformed3(int hours, WorkType workType)
        {
            Console.WriteLine("WorkPerformed3 called " + hours.ToString());
            return hours + 3;
        }
    }

    public enum WorkType
    {
        GoToMeetings,
        Golf,
        GenerateReports
    }
}