public void Run()
{
List <Student> students = StudentsRepository.ChooseTypeOfGettingStudents();
List <Student> selectedStudents = students
.Where(student => GetAge(student) < 16)
.ToList();
Console.WriteLine($"Number of students younger than 16: {selectedStudents.Count}\n");
foreach (var student in selectedStudents)
{
PrintData(student);
}
}