#include <stdio.h>

#if LOG_LEVEL >= 2
#define DEBUG(message) printf("DEBUG %s:%d %s\n",__FILE__,__LINE__,message);
#else
#define DEBUG(message) 
#endif

#if LOG_LEVEL >= 1
#define WARN(message) printf("WARN %s:%d %s\n",__FILE__,__LINE__,message);
#else
#define WARN(message) 
#endif

int main() {

  int a = 5;
  int b = 10;

  WARN("got here...");
  DEBUG("how about here...");

  printf("a+b is %d\n", a+b);
  return 0;
}