// student7.cc
#include <iostream>
#include <string>
using namespace std;

class Student
{
  private:
    string Name;
    bool Auditor;
    double *Grades;
    
  public:
    // Constructor
    Student(string theName, bool isAuditor = false)
           :Name(theName), Auditor(isAuditor)
    {
      Grades = new double[3];
      for (int i=0; i<3; i++) Grades[i] = 0.0;
    }
    // Destructor
    ~Student()
    {
      delete [] Grades; // delete the dynamically allocated array
    } 
    void SetGrade(int whichGrade, double grade)
    {
      Grades[whichGrade] = grade;
    }
    // friend declaration gives function outside class access to private bits
    friend class PrintHelper;
}; // done defining and declaring Student class

class PrintHelper
{
  public:
    void PrintStudentGrades(const Student& Input) 
    {
      if (Input.Auditor) cout << "Auditor ";
      else cout << "Student ";
      cout << Input.Name << " grades: ";
      cout << Input.Grades[0] << "," << Input.Grades[1];
      cout << "," << Input.Grades[2];
      cout << ". Course grade: ";
      cout << (Input.Grades[0] + Input.Grades[1] + Input.Grades[2]) / 3.0;
      cout << endl;
    }
};

int main()
{
  Student Student1("John Smith");
  Student1.SetGrade(0, 80.0);
  PrintHelper X;
  X.PrintStudentGrades(Student1);
}