public Student(string firstname, string secondname, string thirdname, decimal age, string dateofbirthday, string specialization, string gender, string course, string group, Adress adress) { this.firstname = firstname; this.secondname = secondname; this.thirdname = thirdname; this.age = age; this.specialization = specialization; this.dateofbirthday = dateofbirthday; this.gender = gender; this.course = course; this.group = group; this.adress = adress; }