PI Works Technical Questionnaire - SW Support

using System;

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("The value of the 1st variable: ");
            int a =Int32.Parse(Console.ReadLine());
            Console.Write("The value of the 2nd variable: ");
            int b= Int32.Parse(Console.ReadLine());
            a = a + b;
            b = a - b;
            a = a - b;
            Console.WriteLine("---------------------------------------");
            Console.WriteLine("The value of the 1st variable: "+a);
            Console.WriteLine("The value of the 1st variable: "+b);
            Console.Write("Press a key to close the application");
            Console.ReadKey();
        }
    }
}