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: http://stackoverflow.com/questions/15520880/initializing-entire-2d-array-with-one-value — dragosht, Aug 01 '14 at 08:04

score 2 · Answer 1 · answered Aug 01 '14 at 08:04

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 01 '14 at 08:04

Timbo

Just what I needed. Thank you. – Bogdan Alexandru Aug 01 '14 at 08:05
2

That's valid C++, but C syntactically requires something between the braces. (C11 §6.7.9/1) – Potatoswatter Aug 01 '14 at 08:05
1

@Potatoswatter That is correct. Doesn't work with empty brackets. – Bogdan Alexandru Aug 01 '14 at 08:06

1 Answers1