konstruktor

///// MAIN //////
Student * id1 = new Student(1, "Informatyka");
Student *id2(id1);

//// STUDENT ////
Student::Student(int id, std::string fieldOfStudy):id(id),fieldOfStudy(fieldOfStudy)  {
}
Student::Student(Student &student) {
    id = student.id + 1;
    fieldOfStudy = student.fieldOfStudy;
}