1. Container Classes

2. How do we do better? Tough to delete correctly: startLocation

3. Map Map – manages the locations, stores in array

4. Map Class Map class manages all the locations:

5. Map Details – Constructor sets up memory – Destructor cleans up

6. IntList Class that manages an array for us – Don't worry about size – Can remove items!

7. Course CourseList manages array of Course objects – Composed on Courses – responsible for them Student has array of course pointers – Aggregation – not responsible for courses

8. Details CourseList creates array on the heap, reads from file – Responsible for array

9. Details Object diagram:

10. Details Provides access to pointers to Courses

11. Student Student maintains list of pointers – Owns array, NOT courses it points to

12. Student Shared use of Course objects

13. Dynamic Array of Pointers Array of Pointers: Course* myArray[10]; Dynamic array Not of Pointers: Course* myArray; I have a memory address that is start of array Array contains Courses I am an array of 10 Pointers to courses

14. Dynamic Array of Pointers Array of Pointers: Course* myArray[10]; Dynamic array Not of Pointers: Course* myArray; Dynamic array of Pointers: Course** myArray; I have a memory address that is start of array Array contains pointers to Courses

15. Initializing Allocating array of pointers on heap: I need an array that is this size It contains pointers to Courses Put it on heap give me start address