//*********************************************
// COURSE.H - Course and Registration classes
//*********************************************

// Chapter 2 sample application.

#include <iostream.h>
#include <fstream.h>

const unsigned CnameSize = 10;

class Course {
public:
  Course();
  void Input( ifstream & infile );
  void Output( ofstream & ofile ) const;

private:
  char name[CnameSize]; // course name
  char section;         // section (letter)
  unsigned  credits;    // number of credits
};

const unsigned MaxCourses = 10;

class Registration {
public:
  Registration();
  void Input( ifstream & infile );
  void Output( ofstream & ofile ) const;

private:
  long studentId;          // student ID number
  unsigned semester;       // semester year, number
  unsigned count;          // number of courses
  Course courses[MaxCourses]; // array of courses
};


//*************************************************
// REGIST.CPP - Course and Registration class
//              implementations, and main program.
//*************************************************

#include "course.h"

Course::Course()
{
  name[0] = '\0';
}

void Course::Input( ifstream & infile )
{
  infile >> name >> section >> credits;
}

void Course::Output( ofstream & ofile ) const
{
  ofile << "  Course:  " << name << '\n'
        << "  Section: " << section << '\n'
        << "  Credits: " << credits << endl;
}

Registration::Registration()
{
  count = 0;
}

void Registration::Input( ifstream & infile )
{
  infile >> studentId >> semester >> count;

  for(int i = 0; i < count; i++)
    courses[i].Input( infile );
}

void Registration::Output( ofstream & ofile ) const
{
  ofile << "Student ID: " << studentId << '\n'
        << "Semester:   " << semester << '\n';

  for(int i = 0; i < count; i++)
  {
    courses[i].Output( ofile );
    ofile  << '\n';
  }
}

// MAIN.CPP - Chapter 2 example

// Main program for the Registration application

#include "course.h"

int main()
{
  // Read a Registration object from an input
  // file and write it to an output file.

  ifstream infile( "rinput.txt" );
  if( !infile ) return -1;

  Registration R;
  R.Input( infile );

  ofstream ofile( "routput.txt", ios::app );
  if( !ofile ) return -1;

  R.Output( ofile );

  return 0;
}


// RINPUT.TXT file------------------

102234 962 4
CHM_1020 C 3
MUS_1100 H 1
BIO_1040 D 4
MTH_2400 A 3