using System;

namespace practice
{
    public delegate int MathOperation(int x, int y); // Step 1: Declare delegate

    public class DelegateExample
    {
        public static int Add(int x, int y)          // Step 2: Define a matching method
        {
            return x + y;
        }

        public static void Main()
        {
            MathOperation d = Add;                  // Step 3: Assign method to delegate
            int res = d(2, 3);                      // Step 4: Invoke delegate
            Console.WriteLine("Result: " + res);
        }
    }
}