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C/C++ and unspecified sizes in arrays

post #1 of 4
Thread Starter 
Does anyone know if not specifying the size of an array while initializing it slows down runtime or is it done at compile time?

I'm referring to this:

Code:
int i1[] = { 1, 2, 3, 4 };
versus

Code:
int i1[4] = { 1, 2, 3, 4 };
I realize that it's not fundamentally important since it's such a cheap computation but I am curious like that
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post #2 of 4
This array should be set up at compile time.
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by error10 View Post
This array should be set up at compile time.
I had a hunch that it was the case. Thanks
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post #4 of 4
You can always look at the disassembly for that call and see if the code changes at all one way or the other. But yea, in this case error10 is right, that's done at compile time.
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