Is the below declaration valid in C?
char key[] = {};
If not why not?
6
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1How big would the array be?Kninnug– Kninnug2016-07-20 16:44:39 +00:00Commented Jul 20, 2016 at 16:44
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I see two completely separate questions above. Suggest picking one.T.J. Crowder– T.J. Crowder2016-07-20 16:45:03 +00:00Commented Jul 20, 2016 at 16:45
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I have chosen one and array can be of any sizeshare75– share752016-07-20 16:48:02 +00:00Commented Jul 20, 2016 at 16:48
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1Have you actually tried it?Eugene Sh.– Eugene Sh.2016-07-20 17:02:31 +00:00Commented Jul 20, 2016 at 17:02
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1An initializer cannot be empty in Cclarasoft-it– clarasoft-it2016-07-20 17:17:48 +00:00Commented Jul 20, 2016 at 17:17
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1 Answer
Per the online C2011 standard, it is not valid; you may not have an empty initializer list (see 6.7.9, Syntax). That doesn't mean a specific implementation can't offer an empty initializer list as an extension, but the utility would be unclear.
Beyond that, the compiler has no way of knowing how much storage to set aside for the array.
