P1 Swap two numbers

    class Program

    {

        static void Main(string[] args)

        {

            int a, b, c;

            Console.WriteLine("Enter two numbers : ");

            a = int.Parse(Console.ReadLine());

            b = int.Parse(Console.ReadLine());

            c = a;

            a = b;

            b = c;

            Console.WriteLine("After Swapping ");

            Console.WriteLine("a = " + a + ", b = " + b);

            Console.ReadLine();

        }

    }

Output :