// Enrolls student in course
    public void enroll(Course newCourse) {
        if (!this.isScheduleFull() && !this.hasCourse(newCourse)) { // if schedule is not full, and not already in course
            if (newCourse.addStudent(this)) { // Try to enroll. If class is not full, add student to it.
                courses[numofSC] = newCourse; // add course to student's list if enrolled
                numofSC++; // increment number of classes they are in
            } else { // Occurs only if the class the student is trying to enroll in is full
                System.out.print("Unable to enroll ");
                System.out.print(this.getStudentName());
                System.out.print(" in course ");
                System.out.print(newCourse.getCourseName());
                System.out.print(" (Course ID:");
                System.out.print(newCourse.getCourseId());
                System.out.println(") because course is full!");
            }
        } else { // Occurs if student's schedule is full or are already in course
            System.out.print("Unable to enroll ");
            System.out.print(this.getStudentName());
            System.out.print(" in course ");
            System.out.print(newCourse.getCourseName());
            System.out.print(" (Course ID:");
            System.out.print(newCourse.getCourseId());
            System.out.print(") because");
            // so we just adjust the output based on what happened
            if (this.hasCourse(newCourse)) { // already in course
                System.out.println(" student is already in this class!");
            } else { // schedule full
                System.out.println(" student's schedule is full!");
            }
        }
    }