using System;

​

// A delegate is a pointer to function.

// wat is the beneficiet of calling a function indirectly via a pointer ?

// a delegate is a representative to communicate between two parties.   

public delegate T add<T>(T param1, T param2); // generic delegate

​

public class Program

{

    public static void Main()

    {

        add<int> sum = Sum;

        add<string> concat = Concat;

        Console.WriteLine("Hello World");

        Console.WriteLine( sum (10,20));

        Console.WriteLine( concat("ik ben ", "belaid el boubkari "));   

    }

​

​

    public static int Sum(int val1, int val2)

    {

        return val1 + val2;

    }

​

    public static string Concat(string str1, string str2)

    {

    return str1 + str2;

    }

}