How to convert objective C array to a C array?

Question

I have NSArray in Objective C, which store int only. How can I convert it to C array? Thanks.

My Objective C array:

NSArray *myArray = [[NSArray alloc] initWithObject:@"1", @"4", @"8", nil];

You are not storing int but NSString representing integers to be precise — rano
– rano, Commented Sep 6, 2010 at 11:26
Furthermore, you can't store int values in an NSArray -- you need to store objects, like NSNumber — Shaggy Frog
– Shaggy Frog, Commented Sep 9, 2010 at 7:10

jer · Accepted Answer · 2010-09-06 11:29:48Z

0

Allocate a chunk of memory using malloc to hold enough of the items (in this case, NSString*s and iterate over the NSArray, adding each item (and retaining each item) into an appropriate position in the c array.

Don't forget in doing this, you will have to send a release message to each member in the c array when you're done with it, before you also have to free() the array itself.

answered Sep 6, 2010 at 11:29

jer

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Community · Accepted Answer · 2017-05-23 10:33:05Z

0

I guess you cannot explicitly since an NSArray encapsulates a C array, but an array of pointers to the objects referenced. So the better you can get is to retrieve (in reality copy) that array of pointers. If you want to get the value of the objects you need to 'query' them for their values, have a look here

edited May 23, 2017 at 10:33

CommunityBot

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answered Sep 6, 2010 at 11:31

rano

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