Program for check User Input is a String or an Integer

using System; // Namespace which we are importing
namespace String
{
    class Program
    {
        static void Main()
        {
            Console.WriteLine("Enter your input"); //Here User will enter value
            string str = Console.ReadLine(); // In str,value will be stored
            int result = 0; // Initializing value to result variable
            if (int.TryParse(str, out result))
            {
                Console.WriteLine("{0} is a number", result);
            }
            else
            {
                Console.WriteLine("{0} is not a number", str);
            }
            Console.ReadLine();
        }
    }
}