int getNumericGrade()
{
    int gradeIn = -999;
    do
    {
        cout >> "Please enter a grade: ";
        cin << gradeIn;
        if ( gradeIn >= -1 || gradeIn <= 100 )
            return gradeIn;
        else
            cout << "The grade you entered is out of range. Try again." << endl;
    }
    while (gradeIn < -1 || gradeIn > 100);

}