public Student() : base()
{
YearOfEntrance = 2019;
EntrancePoints = 368;
AverageMark = 9.25;
Oly = Olimpiads.Physics;
nxtOly.name = "olimpiad";
nxtOly.date1 = new DateTime(2020, 11, 8);
}
public Student(string name, string country, int yearofbirth, string speciality, int entranceyear, int points, double avmark, Olimpiads oly = default, DateTime date = default)
: base(name, country, yearofbirth, speciality)
{
YearOfEntrance = entranceyear;
EntrancePoints = points;
AverageMark = avmark;
Oly = oly;
nxtOly.name = "olimpiad";
nxtOly.date1 = date;
}