static void Main(string[] args) { Book classOfAvengers = new Book(); Student spiderman = new Student("Peter", "Parker", new Subject("Math", 80.3f)); Student ironman = new Student("Tony", "Stark", new Subject("Math", 78f)); Student hulk = new Student("Bruce", "Banner", new Subject("Math", 92.7f)); classOfAvengers.AddStudent(spiderman); classOfAvengers.AddStudent(ironman); classOfAvengers.AddStudent(hulk); Book.PrintStudents(classOfAvengers); }