static void Main(string[] args)
{
// ILector lector;
Professor professor = new Professor("Ivan Ivanovich");
ICourse cours = professor.CreateCourse("ASP.NET.MVC");
AllCourses electives = new AllCourses();
electives.AddCourse(cours);
Student student = new Student("Petya");
student.Subscribe(cours);
cours.StartCours();
cours.FinishedCours();
Console.ReadKey();
}
