Array of structures for PowerPC Compiler

Question

I have a problem, I was asked to declare an array of structures, with one structure inside like so:

typedef struct {
int a;
int b;
int c;
}blah;

int main()
{
    blah arr[1] = {{0, 0, 0}};
//...
}

Is the above initialization correct?

Answer 1

Yes, it's totally correct.

Array of length 1 is not much different from those containing multiple elements: they all are aggregate types and their initialization should be enclosed in curly braces. If your array had 2 elements, the initialization would be like

blah arr[2] = { {0, 0, 0}, {0, 0, 0} };

Answer 2

Yes.

You don't need to specify the size if you're going to have an explicit initializer, let the compiler figure it out:

blah arr[] = { { 0, 0, 0 } };

I've also included spaces to make the nesting a bit clearer.