text: #include <iostream>
  #include <fstream>
  #include <string>
  #include <stdlib.h>
  using namespace std;
  
  struct student {
    unsigned int id_number;
    string firstName;
    string lastName;
    string major;
  };
  
  student* create_student_db(int);
  void populate_array(student *, int, fstream &);
  void sort_by_id(student*, int);
  void sort_by_lastname(student*, int);
  void get_student_db_info(student *, int, fstream &);
  void print_array(student*, int);
  void delete_student_db_info(student *);