Print Fibonacci Series using C#.Net

void Main()
        {
            Console.WriteLine("How many numbers do you want in the fibonacci series");
            int Target = int.Parse(Console.ReadLine());

            int p = -1;
            int q = 1;

            for (int i = 0; i < Target; i++)
            {
                int Sum = p + q;
                p = q;
                q = Sum;
                Console.Write(q + "  ");
            }

            Console.ReadLine();
        }