Static 2D Array

#include <iostream>
#include <iomanip>
using namespace std;

const int NUMB_STUD = 5;    // Number of student records (ROWS)
const int NUMB_GRADES = 3;  // "   " grades per student (COLUMNS)

void displayGrades(const int arr[][NUMB_GRADES], const int rowSize);
void getAverage(const int arr[][NUMB_GRADES], const int rowSize);
void getHighest(const int arr[][NUMB_GRADES], const int rowSize);

int main()
{

    int grades[NUMB_STUD][NUMB_GRADES] = { { 96, 91, 100 },
                                            {88, 93, 84},
                                            {70, 75, 83},
                                            {67, 62, 67},
                                            {98, 85, 86}
                                                        };
    displayGrades(grades, NUMB_STUD);
    getAverage(grades, NUMB_STUD);
    getHighest(grades, NUMB_STUD);


    system("Pause");
    return 0;
}

void displayGrades(const int arr[][NUMB_GRADES], const int rowSize)
{
    cout << "STUDENT GRADES" << endl;

    for (int r = 0; r < rowSize; r++)
    {
        cout << "Student " << r + 1 << " Grades: ";

        for (int c = 0; c < NUMB_GRADES; c++)
            cout << setw(5) << arr[r][c];
        cout << endl;
    }
    cout << endl << endl;
}

void getAverage(const int arr[][NUMB_GRADES], const int rowSize)
{
    float sum = 0.0;
    float average;

    cout << "AVERAGE OF GRADES FOR EACH STUDENT" << endl;
    cout << setprecision(1) << fixed;
    for (int r = 0; r < rowSize; r++)
    {
        cout << "Student " << r + 1 << " Grades: ";

        for (int c = 0; c < NUMB_GRADES; c++)

            sum += arr[r][c];

            average = (sum / NUMB_GRADES);
            cout << setw(5) << average;
            cout << endl;
    }
    cout << endl << endl;
}

void getHighest(const int arr[][NUMB_GRADES], const int rowSize)
{
    cout << "HIGHEST GRADE FOR EACH EXAM" << endl;

    int max;

    for (int c = 0; c < NUMB_GRADES; c++)
        cout << setw(8) << right << "Exam " << c + 1;
    cout << endl;
    for (int c = 0; c < NUMB_GRADES; c++)
    {
        max = arr[0][c];


        for (int r = 0; r < rowSize; r++)
            if (max < arr[0][c])
            {
                max = arr[0][c];
            }
            cout << setw(9) << max;
    }
        cout << endl << endl;

}