Exam-style question
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Which statement correctly compares the two forms of composition in the specification?.
- A.Composition combines procedures for a composition abstraction and data objects for a data abstraction
- B.Composition combines data objects only and cannot involve procedures
- C.Composition means copying one procedure without combining it with anything
- D.Composition is limited to storing a single value
Model answer
What a good answer should say
- Composition combines procedures for a composition abstraction and data objects for a data abstraction
Explanation
Why this works
The specification distinguishes between combining procedures to form compound procedures and combining data objects to form compound data.
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