/*--------------------------------------------------------
 Header file for class Student WITH explicitly-defined
    destructor, copy constructor, and overloaded assignment
    operator.
 
 created by: Sharon Tuttle
 last modified: 12-03-03 - (based on posted Student2.h from
                           Week 14-2 lecture)
                12-12-03 - added overloaded ==
 ---------------------------------------------------------*/

#include <string>
using namespace std;

class Student
{
    public:
        //-----
        // constructors
        //-----
        Student (string gvn_lastName, string gvn_firstName,
	         int gvn_numGrades);
        Student ();
    
        // copy constructor
        Student (const Student& studentObject);
    
        //-----
        // destructor
        //-----
        ~Student();

        //-----
        // accessor functions
        //-----
        string get_lastName() const;
        string get_firstName() const;
        int get_numGrades() const;
    
        // returns the ith grade for this student
        //    (return -1 if gradesArray NULL or
        //    i is out-of-bounds)
        double get_grade(int i) const;

        //-----
        // mutator functions
        //-----
        void set_lastName(string new_lastName);
        void set_firstName(string new_firstName);

        // note that this also dynamically allocates
        //    a gradesArray of this size...
        void set_numGrades(int new_numGrades);

        // set the ith grade in gradesArray to newGrade
        void set_grade(int i, double newGrade);

        //-----
        // overloaded operators
        //-----

        void operator =(const Student& rightHandStudent);
        bool operator == (const Student& rhStud) const;    

        //-----
        // other member functions
        //-----

        //----
        // Contract: avgGrade : void -> double
        // Purpose: returns the average of the grades
        //          in calling Student's gradesArray;
        //          returns -1 if gradesArray == NULL.
        //
        // Examples: for Student emptyStudent(); :
        //              emptyStudent.avgGrade() == -1
        //           for Student exStudent("Geo", "Jon", 3);
        //              with grades 100, 80, 75,
        //              exStudent.avgGrade() == 85
        //----- 
        double avgGrade() const;

        //-----
        // Contract: hasHigherAvgThan : Student -> bool
        // Purpose: returns true if calling Student has
        //          an average grade higher than 
        //          otherStudent; returns false otherwise.
        //
        // Examples: if Student student1("A", "A", 3)
        //              has grades 100, 80, 75,
        //           Student student2("B", "B", 4)
        //              has grades 80, 80, 90, 90, and
        //           Student student3("C", "C", 3)
        //              has grades 86, 87, 88,
        //           then:
        //   student1.hasHigherAvgThan(student2) == false
        //   student3.hasHigherAvgThan(student2) == true
        //   student1.hasHigherAvgThan(student3) == false 
        //-----
        bool hasHigherAvgThan(Student otherStudent) const;

    private:
        // member variables
        string lastName;
        string firstName;
        int    numGrades;
        double *gradesArray;
};