struct if1
{
  string idnum;//id number for the student
  string lastname;//last name of student
  string firstname;//first name of student
  int examscore[maxexam];//array of all the exam scores of the student
  int hwscore[maxhw];//array of all the home work scores of the student

  void operator=(if1& f1)
  {
      idnum = f1.idnum;
      lastname = f1.lastname;
      firstname = f1.firstname;
      memcpy(examscore, f1.examscore, sizeof(examscore));
      memcpy(hwscore,f1.hwscore,sizeof(hwscore));
  }
};