#include <cstdlib>
#include <iostream>
#include "GradeBook.h"

using namespace std;         
                          
int main()
{
    int cNo;
    cout << "enter the course code" << endl;
    cin >> cNo;
    GradeBook G;
    G.setCourseNo(210);
    G.displayMessage(cNo);
    G.displayMessage();
    cout << "course avarage is " << G.determineCourseAverage() << endl;
    
    //for dev-c++ bug
    int finishHim;
    cin >> finishHim;
    return 0;
}

GradeBook Driver (main)

C++