//declare str var for nums
            string st1 = "";
            string st2 = "";

            //Declare vars and init to zero
            int num1 = 0;
            int num2 = 0;
            //display title as the c# console calc app
            Console.WriteLine("Console Calc in C#");
            Console.WriteLine("\n--------------------\n");

            //First num input
            Console.WriteLine("Enter a number and press enter.");
            num1 = Convert.ToInt32(Console.ReadLine());
            //Second num input
            Console.WriteLine("Enter a number and press enter.");
            num2 = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("CHoose an option from list");
            Console.WriteLine("\ta - Add");
            Console.WriteLine("\ts - Subtract");
            Console.WriteLine("\tm - Multiply");
            Console.WriteLine("\td - Divide");

            //Use a switch statement to calculate
            switch (Console.ReadLine())
            {
                case "a":
                    Console.WriteLine($"Result: {num1} + {num2} = " + (num1 + num2));
                    break;
                case "s":
                    Console.WriteLine($"Result: {num1} - {num2} = " + (num1 - num2));
                    break;
                case "m":
                    Console.WriteLine($"Result: {num1} * {num2} = " + (num1 * num2));
                    break;
                case "d":
                    Console.WriteLine($"Result: {num1} / {num2} = " + (num1 / num2));
                    break;


            };
            Console.WriteLine("Press any key to close..");
            Console.ReadKey();