I want to create a constant static array to be used throughout my Objective-C implementation file similar to something like this at the top level of my ".m" file:
static const int NUM_TYPES = 4;
static int types[NUM_TYPES] = {
1,
2,
3,
4 };
I plan on using NUM_TYPES
later on in the file so I wanted to put it in a variable.
However, when I do this, I get the error
"Variably modified 'types' at file scope"
I gather that this may have something to do with the array size being a variable (I don't get this message when I put an integer literal there, like static int types[4]
).
I want to fix this, but maybe I am going about it all wrong...I have 2 goals here:
NUM_TYPES
into a variable so I don't have the same literal scattered about different places in my fileAny suggestions?
[EDIT] Found this in the C Faq: http://c-faq.com/ansi/constasconst.html
The reason for this warning is that const in c doesn't mean constant. It means "read only". So the value is stored at a memory address and could potentially be changed by machine code.