C++ Institute Exam CPA-21-02 Topic 5 Question 33 Discussion

Actual exam question for C++ Institute's CPA-21-02 exam

Question #: 33
Topic #: 5

Which line of code inserted instead of the comment will make the following code run properly without causing memory leaks?

A~Base() ( delete this; }

Bno additional code is needed

C~Base() { delete ptr; delete ptr; }

D~Base() { delete ptr; }

Show Suggested Answer

Suggested Answer: D

by Burma at Jan 14, 2025, 06:54 AM

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Francine

7 days ago

I'll have to go with Option D. It's the only one that seems to properly release the memory without any shenanigans.

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Cristal

14 days ago

Haha, Option A is just... delete this? I don't think that's how you fix memory leaks, my friend.

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Enola

15 days ago

I'm not sure, but I think option C is also a possibility. It deletes the pointer twice.

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Frederica

16 days ago

I agree with Salina, option D makes sense to prevent memory leaks.

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Cory

16 days ago

B? No additional code needed? Seriously? That's like saying 'just ignore the memory leak and hope for the best'.

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Mari

4 days ago

A) ~Base() { delete this; }

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Meghann

21 days ago

I think Option C is a trap. Deleting the same pointer twice is definitely going to cause a memory leak.

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Val

4 days ago

User1: I agree, deleting the same pointer twice is a bad idea.

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Jenelle

26 days ago

Option D looks good to me. We only need to call 'delete ptr;' once to release the memory.

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Salina

1 months ago

I think the correct answer is D) ~Base() { delete ptr; }

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