        static void Main(string[] args)
        {
          int num1, num2, sum, product;
          Console.Write("Enter number1 :");
          num1 = Convert.ToInt32(Console.ReadLine());
          Console.Write("Enter number2 :");
          num2 = Convert.ToInt32(Console.ReadLine());
          sum = num1 + num2;
          product = num1 * num2;
          Console.WriteLine("{0}{1}\n{2}{3}", "sum = ", sum, "product = ", product);
        }
