// grades2.cc
#include <iostream>
#include <string>
using namespace std;

class ClassGrades
{
  private:
    string Name;
    int* Grades;
  
  public:
    ClassGrades(string inName) {
      cout << "In constructor" << endl;
      Name = inName;
      Grades = new int[3]; // assume 3 assignments
      for (int i=0; i<3; i++) { Grades[i] = 0; }
    }
    ~ClassGrades() {
      cout << "In destructor" << endl;
      delete [] Grades;
    }
    ClassGrades(const ClassGrades& src) { // not called in this example
      cout << "In Copy Constructor" << endl;
      Name = src.Name;
      Grades = new int[3];
      for (int i=0; i<3; i++) { Grades[i] = src.Grades[i]; } 
    }
    ClassGrades& operator= (const ClassGrades& src) {
      cout << "In Copy Assignment Operator" << endl;
      if (this != &src) {
        Name = src.Name;
        if (Grades != NULL) delete[] Grades;
        Grades = new int[3];
        for (int i=0; i<3; i++) { Grades[i] = src.Grades[i]; }
      }
      return *this;
    }
    /* replaced by [] operator below
    void SetGrade(int id, int grade) {
      Grades[id] = grade;
    }
    */
    int& operator [] (int Index) {
      if (Index >=0 && Index < 3) {
        return Grades[Index];
      }
    }
    void PrintGrades() {
      cout << "Student " << Name << " has grades: ";
      for (int i=0; i<3; i++) {
        cout << Grades[i] << " ";
      }
      cout << endl;
    }
};

int main()
{
  ClassGrades Student1("John Smith");
  Student1[0] = 99;
  cout << "Student1:"; Student1.PrintGrades();

  ClassGrades Student2("Jane Doe");
  Student2[0] = 100;
  cout << "Student2:"; Student2.PrintGrades();

  Student2 = Student1;
  cout << "Student2:"; Student2.PrintGrades();
}