DCSAhacktoberfest/delegates at master · rohythakur/DCSAhacktoberfest · GitHub

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using System;
namespace mcaa
{
    delegate void del(String s);
    public class delegates
    {
        static void Helllo(String s)
        {
            System.Console.WriteLine("Hello {0}!", s);
        }

        static void Goodbye(String s)
        {
            System.Console.WriteLine("Goodby {0}!", s);
        }


    static void Main(string[] args)
    {
            delegates ab = new delegates();
            del a, b, c, d;
            a = Helllo;
            b =Goodbye;
            c = a + b;
            d = c - a;

            System.Console.WriteLine("invoking delegate a:");
            a("A");
            System.Console.WriteLine("invoking delegate b:");
            b("B");
            System.Console.WriteLine("invoking delegate c:");
            c("C");
            System.Console.WriteLine("invoking delegate d:");
            d("D");


    }

}
}