Exam-style question
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A programmer uses a stack without needing to know whether it is implemented using an array and a top-of-stack pointer. What does this illustrate?.
- A.Data abstraction
- B.Displaying implementation details
- C.Replacing a compound data object with a primitive type
- D.Preventing new data objects from being constructed
Model answer
What a good answer should say
- Data abstraction
Explanation
Why this works
The use of the stack is separated from the details of how the stack is constructed, which illustrates data abstraction.
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