1. Objects with Functions and Arrays

2. Objects can be Passed Class defines type – Can use as type of function or parameter

3. Returning an Object To return object: – Make desired object – Return it Use function:

4. Passing An Object Passing object copies the object: Main: c1 radius: 5

5. Passing An Object Passing object copies the object: Main: c1 radius: 5 c

6. Copies Generally Bad Copies – Are inefficient – Prevent functions from modifying an object Main: c1 radius: 5

7. Copies Generally Bad Copies – Are inefficient – Prevent functions from modifying an object Main: c1 radius: 5 c

8. Copies Generally Bad Copies – Are inefficient – Prevent functions from modifying an object Main: c1 radius: 5 c radius: 10

9. Copies Generally Bad Copies – Are inefficient – Prevent functions from modifying an object Main: c1 radius: 5

10. Pass By Reference Unless you need copy, pass by reference Main: c1 radius: 5

11. Pass By Reference Unless you need copy, pass by reference Main: c1 radius: 5 c

12. Pass By Reference Unless you need copy, pass by reference Main: c1 radius: 10 c

13. Pass By Reference Unless you need copy, pass by reference Main: c1 radius: 10

14. Const Reference To prevent function from modifying, use const reference: Link back to original object Make changing it a compile error

15. Arrays Can have an array of objects CircleList 0 radius: 2 1 2 3 4

16. Arrays Reference individual objects by index CircleList 0 radius: 4 1 radius: 2 2 3 4

17. Arrays Arrays initialized with default constructor CircleList 0 radius: 2 1 2 3 4

18. Arrays This makes 10 circles:

19. Arrays This makes 10 circles: CircleList 0 radius: 2 1 2 3 4

20. Arrays This makes 10 circles: CircleList 0 radius: 1 1 radius: 2 2 radius: 3 3 radius: 4 4 radius: 5

21. Arrays Use initialization list to prevent filling with default objects: CircleList 0 radius: 1 1 radius: 2 2 radius: 3 3 radius: 4 4 radius: 5 Call 1-arg constructor to make anonymous object