Cross Lists: Enrollment ADT
Registry ADT for UW - stores which students are taking which courses
Supported operations:
int TakingCourse(int UWID, int SLN)
- tells if the student is taking the course specified by SLN
void PrintSchedule(int UWID)
- print a list of all the courses this student is taking
void PrintCourseList(int SLN)
- print a list of all the students in this course