Diogenes C#

using System;

namespace WannaBeSeven

{
    class MainClass
    {
        public static void Main(string[] args)  // IF YOU ARE TO REWRITE FROM MY SOURCE, ALL ORIGINAL CREDITORS MUST GO INTO THE CREDITS!
        {

            double num01;
            double num02;
            double num03;
            double num04;
            double num05;
            double num06;
            string CD = null;
            string P = null;
            string answer;



            Console.Write("Diogenes's Calculator 1.0\n\nCredits: Diogenes of Sinope (#57714)\n         DezNutz(#54689)");
            Console.WriteLine();
            Console.WriteLine();


            Console.Write("Hello! Would you like Charity Donation or Propaganda Calculator? (CD or P): ");
            answer = Console.ReadLine();
            if (answer == "CD") {
                Console.WriteLine();
                Console.Write("Howmuch influence does the target have?: ");
                num01 = Convert.ToDouble(Console.ReadLine());
                Console.Write("Howmuch is the cost of Charity Donatins? (Gold): ");
                num02 = Convert.ToDouble(Console.ReadLine());
                Console.Write("What % of  influence does Charity Donation give (Made if value does change)?: ");
                num03 = Convert.ToDouble(Console.ReadLine());
                Console.Write(num02 + num03);
                Console.ReadKey();



                answer = Console.ReadLine();
            } else if(answer == "P") {
                Console.Write("Howmuch influence does the target have?: ");
                num04 = Convert.ToDouble(Console.ReadLine());
                Console.Write("Howmuch influence do you want the target to have?: ");
                num05 = Convert.ToDouble(Console.ReadLine());
                Console.Write("What % of  influence does Propaganda take off (Made if value does change)?: ");
                num06 = Convert.ToDouble(Console.ReadLine());
                Console.Write(num04 + num05);
                Console.ReadKey();

            } else {
                Console.WriteLine("Looks like you didn't type in CD or P. Buh Bye!");
                Console.ReadKey();
            }



        }
    }
}