1. Heterogeneous aggregate datatypes
Structs
Heterogeneous aggregate datatypes

2. Struct is a Definition Struct defines a new data type
Composed of other types

3. Members Members : component parts of struct
Member access operator : . variableName.member
Address
Identifier
Value 16 15
s1.Name
"Bob Smith" 14 13 12 11 10 9 8 7
s1.quizAvg 84 6 5 4 3
s1.labAvg 92 2 1

4. Initialization Can use initialization list
Order MUST match struct order

5. Copy
Assignment does memberwise copy of struct:

6. No other Aggregate Operations
Assignment is the ONLY aggregate operation
No >, <, +, cout, cin, etc…

7. No other Aggregate Operations
Do operations based on members:

8. Broken Function
This does not work…

9. Broken Function
Memory going into function
In function

10. Correct Function To modify struct take reference parameter:
Main: Function:

11. Const Ref Struct parameter options Pass by value : make copy
Pass by reference : work with original
Pass const reference : work with original, prevent changes

12. Struct Return Function can return struct Declare variable Set values
Return var

13. Return
More realistic function:

14. Structs in Structs
Can define struct using existing struct:

15. Structs in Structs
Values in memory:

16. Fields of Fields
Use . multiple times to drill down: