C99 Macro to build a quoted string literal after evaluation -

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I am developing an embedded application in C99, and there are some integer constants in this project, such as defined: 

  #define LEVEL1 0x0000 #define LEVEL2 (LEVEL1 + 1)

This has been useful since tracking these values ​​for logging purposes, so I For example, to create a string from the evaluation versions of the above, use the macro: 

  strncpy (str, STRING (LEVEL2), Lane);

Ideally 

  will evaluate strncpy (str, "0x0001", LAN);

or even 

  strncpy (str, "0001", lane);

Using a two-step macro with # operator (as suggested) approximates its evaluation 

  strncpy (str, "( LEVEL1 + 1) ", Lane);

I would like to avoid using a run-time function - so my attempt on macro solutions. Suggestion:

Since the pre-processor stringer is a massive pain, you have to add a level of anger Both when creating and stringing the version number: 

  #define STRING1 (s) #s #define STRING (s) STRING1 #define LEVEL (x) x #define LEVEL1 LEVEL (1) Define # LEVEL2 LEVEL (2) printf (STRING (LEVEL2)); // 2

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