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Q&A

Welcome to Software Development on Codidact!

Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.

Posts tagged malloc

Subtag of c

For questions about using standard library malloc function that performs dynamic memory allocation.

This tag doesn't have a detailed wiki yet.

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Q&A How to properly use malloc?

I have seen this construct quite a lot: int *p = (int*) malloc(n * sizeof(int)); Is this how it should be? What is the proper way to use malloc? I have also seen this: int *p = malloc(n * size...

3 answers  ·  posted 2y ago by klutt‭  ·  last activity 7mo ago by Lundin‭

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Q&A When does it not work to dereference the pointer for sizeof during malloc?

Background This is kind of a subquestion to How to properly use malloc? When allocating, there are basically two common ways of using the sizeof operator: int *p; p = malloc(n * sizeof *p); /...

1 answer  ·  posted 2y ago by klutt‭  ·  edited 2y ago by hkotsubo‭

Question c pointers malloc
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Q&A What is malloc's standard-defined behavior with respect to the amount of memory it allocates?

I recently told a friend that malloc(n) allocates and returns a pointer to a block of at least N bytes of memory, as opposed to exactly N; that it is allowed to allocate 'extra' memory to meet e.g....

2 answers  ·  posted 2y ago by ajv‭  ·  last activity 2y ago by bta‭