using System;

​

namespace DataTypeCSharp {

   public class Program {

     public static void Main(string[] args) {        

            var i = 10;

            Console.WriteLine("Type of i is {0}",i.GetType().ToString());

​

            var str = "Hello World";

            Console.WriteLine("Type of str is {0}", str.GetType().ToString());

​

            var d = 10.50d;

            Console.WriteLine("Type of d is {0}", d.GetType().ToString());

      }

   }

}