c++ - Null vs ZeroMemory -

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what difference between setting object null , using zeromemory?

i hear practice in winapi (which c) person should use zeromemory on c objects. come background of c# , seems c++ guy should know.

i found directx api, whether zeromemory objects or not, application still works, samples use zeromemory , don't.

can clarify these things?

zeromemory fills block of memory zeros.

setting pointer null make pointer points nothing, , is different filling memory pointer pointing zeros (you still able access memory via pointer, example).

before can useful object, need replace these zeros more meaningful - why both programs use zeromemory or not works.

reason zeromemory in context find operations on objects not initialized @ point of access (for example, visual studio filling uninitialized memory 0x0c0c0c0c /* or similar */, when encounter pattern during debugging, know object has not been initialized yet).


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