Can I initialize an array of array with all 0s?

Question

I have this:

uint8_t buf[X][Y];

I would like to initialize all elements to 0. Will this do the trick:

uint8_t buf[X][Y] = { 0 };

? i.e. will it initialize all X*Y elements to 0?

possible duplicate: stackoverflow.com/questions/15520880/… — dragosht
– dragosht, Commented Aug 1, 2014 at 8:04

Timbo · Accepted Answer · 2014-08-01 08:04:04Z

2

Yes. If you have an initializer ({ ... }), all elements not explicitly initialized will be initialized to zero.

Edit: Removed part that is not correct when using C.

answered Aug 1, 2014 at 8:04

Timbo

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2 Comments

That's valid C++, but C syntactically requires something between the braces. (C11 §6.7.9/1)

@Potatoswatter That is correct. Doesn't work with empty brackets.