public static void Main(string[] args)
Console.WriteLine("Please input your first name: ");
firstName = Console.ReadLine();
Console.WriteLine("Please input your last name: ");
lastName = Console.ReadLine();
Console.WriteLine(" Please input a number ");
number1 = int.Parse(Console.ReadLine());
Console.WriteLine(" Please input a 2nd number ");
number2 = int.Parse(Console.ReadLine());
Console.WriteLine( firstName + " " + lastName + " the sum of "+ number1 + " and " + number2 + " is " + sum );
Console.WriteLine(firstName + " Thanks for using my program. Come back again! ");