C
#ifndef TRACE_H
#define TRACE_H
 
#include <stdio.h>
 
enum {
    INFO_LEVEL = 0x01,
    ERR_LEVEL = 0x02
};
 
int levels = INFO_LEVEL | ERR_LEVEL;
 
 
#define TRACE(level,strings) \
    if ((level) & levels) \
{ \
    printf(STR_MODULENAME); \
    printf(__FUNCTION__); \
    printf##strings; \
}
 
#endif // TRACE_H
 

C
static const char STR_MODULENAME[] = "Test:";
 
#include <trace.h>
 
int main(int argc, char *argv[])
{
    TRACE(INFO_LEVEL, ("Im is INFO trace %d\n\r", 12345));
 
    return 0;
}
 

C
printf("Im is INFO trace %d\n\r", 12345);
 

C++ (Qt)
#define TRACE(format, ...) printf(("%s %s " format), STR_MODULENAME, __FUNCTION__, ##__VA_ARGS__)

C
TRACE("i'm  trace %d", 123);
 

C
#ifndef TRACE_H
#define TRACE_H
 
#include <stdio.h>
 
enum {
    INFO_LEVEL = 0x01,
    ERR_LEVEL = 0x02
};
 
int levels = INFO_LEVEL | ERR_LEVEL;
 
#define ENDL "\n\r"
 
#define TRACE(level, format, ...) \
    if ((level) & levels) \
{ \
    printf(("%s:%s: " format), STR_MODULENAME, __FUNCTION__, ##__VA_ARGS__); \
    printf(ENDL); \
}
 
#endif // TRACE_H
 

C
...
TRACE(INFO_LEVEL, "Im is INFO trace %d %s", 12345, "-string");
...
 

C
...
TRACE(INFO_LEVEL, ("Im is INFO trace %d %s", 12345, "-string"));
...