Console Output

Question: Write out the output (what would be written to the console), when this following block of code is run:

            public class ZipData
                {
                    string ZipCode { get; set; }
                    string CityName { get; set; }
                    string StateName { get; set; }
                }

                public static class ZipHelper
                {
                    public static string WhatsMyCity(string Zip)
                    {
                        //Returns a string representing the City for the Zip provided
                        //Returns null if string is not a zip or not found in database
                    }
                    public static string WhatsMyState(string Zip)
                    {
                        //Returns a string representing the State for the Zip provided
                        //Returns null if string is not a zip or not found in database
                    }
                } 
            

Answer:
WhatsMyCity and WhatsMyState are not returning anything so the program will not compile.