public StudentAndLections(Lection lection, Student student)
{
this.lection = lection;
mark = 0;
this.student = student;
presence = false;
homework = false;
}
public StudentAndLections(Lection lection, int mark, Student student, bool presence, bool homework)
{
this.lection = lection;
this.mark = mark;
this.student = student;
this.presence = presence;
this.homework = homework;
}