CODEWITHSUNDEEP
objective-ccarraysvariablesmultidimensional-array
Juulie
Juulie

Reputation: 79

C 2 dimensional array in Objective-c

Im new to Objective-c, and what im trying to do is to create a 2 dimensional array of integers.

I know i can use C, in the following way:

int levelData[3][4] = {{1,1,1,1}, {1,0,0,1}, {1,1,1,1}};

Thing is, i want other other classes to be able to acces this data, so i have to include this variable in the header file, this is where the problem is:

declaring as int **levelData, int levelData[3][4] or whatsoever doesnt work.

Can anyone help me?

Upvotes: 1

Views: 1174

Answers (2)

Juulie
Juulie

Reputation: 79

Found the solution, i had a static initializer. You cant use those in combination with this.

Upvotes: 1

AndersK
AndersK

Reputation: 36082

in your .h file you write

extern int levelData[3][4];

in your .m/.c file you write

int levelData[3][4]= {{1,1,1,1},{1,0,0,1},{1,1,1,1}};

EDIT:

at any rate it is better to avoid global variables altogether and instead pass it as a parameter or have it is a ivar in your objective-c class. This avoids strange hard to see dependencies between modules e.g. if a function takes levelData as argument it is clear that the function operates on that argument however by having it global, you can't see easily what a function is using.

Upvotes: 2

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