Add 2 numbers in C#

// Add 2 numbers in C#

using System;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Enter 1st number: ");
            string n1,  //first number
                n2;     //2nd number
            n1 = Console.ReadLine();
            Console.Write("Enter 2nd number: ");
            n2 = Console.ReadLine();

            int no1, no2;
            no1 = Int32.Parse(n1);
            no2 = Int32.Parse(n2);

            Console.WriteLine("Sum: {0}", no1 + no2);//Change the position of {0} to see what it does.
        }
    }
}

Add two numbers in C# (a better approach)