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  1. #include <stdio.h>
  2.  
  3. #define ERROR 10
  4. #define MAIN "Main:"
  5.  
  6. #define LOG(lvl,mod,fmt,...) \
  7.     char msg[256] = {0}; \
  8.     snprintf(msg, 256, "%s: %d: "fmt,mod,lvl,##__VA_ARGS__)
  9.  
  10. int main()
  11. {
  12.     LOG(ERROR, MAIN, "This is a log statement %d.\n", 0);
  13.     return 0;
  14. }
Success #stdin #stdout 0s 9296KB
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https://ideone.com/F9TW7H
language:
C99 (gcc 8.3)
created:
8 years ago
visibility:
public

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