text: #ifndef __SECTION_H
  #define __SECTION_H
  
  #include <iostream>
  #include "semester.h"
  #include "subject.h"
  #include "course.h"
  class Section
  {
  public:
      Section(Course course, Semester semester, int year);
      Section(std::istream& ist);
      void save(std::ostream &ost);
      friend std::ostream &operator<<(std::ostream &ost, const Section &section);
  
  private:
      Course _course;
      Semester _semester;
      int _year;
  	int _max_students;
  };
  
  #endif
  