Someone

using System;

using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Addition
{
    class Program
    {
        static void Main(string[] args)
        {
            int firstNumber;
            int secondNumber;
            int thirdNumber;

            Console.WriteLine("Please enter a number: ");
            firstNumber = Convert.ToInt32
            (Console.ReadLine());


            Console.WriteLine("Please enter another number: ");
            secondNumber = Convert.ToInt32(Console.ReadLine());

            thirdNumber = firstNumber + secondNumber;

            Console.WriteLine("The sum of your numbers is:" + thirdNumber);
            Console.ReadLine();
        }
    }
}