Question regarding Warning

I'm writing in my code, static const NSString *a = @"HARDIk"; this is in a.h file

now i use this,

a object in any b file I'm getting warning a defined but not used

how to remove this warning?

From stackoverflow

• You have to put the definition into the implementation (.m) file. If you want to remove the symbol a from another implementation file, you have to remove the static and put a declaration

  extern NSString* a;
  

  in your header.

  : I did as u said but it gives a is initialized and declare extern

  Nikolai Ruhe : I don't understand your comment. You have to write `NSString* a = @"HARDIk";` in the .m file in global scope (not in a function).

  : Sir i have simple question. I have a.h file where i declare static const NSString *variable = @"HARDIk" Now, in b.m file i have function [a funtionname:(NSString*)variable]; i use this operation and it works properly but i get warning difined but not used how to remove this warning. is any solution for this warning?

  Nikolai Ruhe : As I said in the original answer: replace `static const NSString *variable = @"HARDIk";` with `extern NSString *variable;`. Then write `NSString *variable = @"HARDIk";` in the a.m file.

  Nikolai Ruhe : You asked 36 questions but accepted none of the answers. Please start to accept (right) answers, otherwise people will stop helping you.