using System;

using System.Collections.Generic;

​

namespace GenericsExample

{    

    public class Calc<T>

    {

        public T Add (T no1, T no2)

        {

            dynamic dynamic1 = no1;

            dynamic dynamic2 = no2;

            return dynamic1 + dynamic2;

        }

    }

    public class program

    {

        public static void Main(string[] args)

        {

            var c1 = new Calc<int>();

            Console.WriteLine("Sum of 5 + 7 is {0}", c1.Add(5, 7));

            var c2 = new Calc<float>();

            Console.WriteLine("Sum of 5 + 7 is {0}", c2.Add(5.5F, 7F));

            var c3 = new Calc<double>();

            Console.WriteLine("Sum of 5 + 7 is {0}", c3.Add(5.5, 7.25));

            Console.ReadLine();

        }

    }

}

​