using System;

​

class Program

{

    // Define a delegate

    public delegate int Operation(int x, int y);

​

    // Method that accepts delegate as parameter

    public static void ExecuteOperation(int a, int b, Operation op)

    {

        int result = op(a, b);

        Console.WriteLine("Result: " + result);

    }

​

    static void Main()

    {

        // Call ExecuteOperation using an anonymous method using inline delegate

        ExecuteOperation(5, 3, delegate(int x, int y) { return x + y; });

​

        // anonymous method using inline delegate

        ExecuteOperation(5, 3, delegate(int x, int y) { return x * y; });

        //lambda expression

        ExecuteOperation(5, 30, (x, y) => x + y);  // Very common in modern C#

​

    }

}

​