static void Main(string[] args) { Student st1 = new Student("Craig", 12, "Games Dev", 10004794); PhdStudent ph1 = new PhdStudent("Mark", 12, "Games Dev", 10004794, "study of bannanas"); Staff staff1 = new Staff("Scott", 14, "computing", "123456"); acedemicStaff ac1 = new acedemicStaff("Leigh", 14, "computing", "123456", "Games"); Registry reg = new Registry(); Payroll payRoll = new Payroll(); University napier = new University(); reg.addStudent(st1, napier); reg.addStudent(ph1, napier); //reg.printRegistry(); payRoll.addStaff(ac1, napier); payRoll.addStaff(staff1, napier); //payRoll.printPayroll(); napier.printUni(); }