static void Main(string[] args)
{
var s = new Student("Alex");
s.SetKnowledge(new Knowledge(5));
University university = new University("CH.U.I.");
University universityWithoutStudents = new University("Sad university");
university.AddStudent(new Student("Andrew Kostenko", new Knowledge(5)));
university.AddStudent(new Student("Julia Veselkina", new Knowledge(4)));
university.AddStudent(new Student("Maria Perechrest", new Knowledge(3)));
university.AddStudent(new Student("Roma Danilyk", new Knowledge(4)));
university.AddStudent(new Student("Oleg Pilipenko", new Knowledge(3)));
university.AddStudent(s);
Internship internship = new Internship("Interlink");
internship.SelectStudents(university);
Console.WriteLine("List of internship's students:");
Console.WriteLine(internship.GetStudents());
Console.WriteLine(universityWithoutStudents.GetAverageKnowledge());
}
