#include <stdio.h>

 #include <stdint.h>

 #include <stdarg.h>

 #if defined(__GNUC__)

 #endif

 #if defined(_MSC_VER)

 #define snprintf(buf,size,fmt,...) sprintf_s(buf,size,fmt,__VA_ARGS__)

 #define vsnprintf(buf,size,fmt,...) vsprintf_s(buf,size,fmt,__VA_ARGS__)

 #endif

 #define STRAPPEND(buf, size, offset, fmt, ...) do { \

 if (offset < size) \

     { \

     offset += snprintf(buf + offset, size - offset, fmt, __VA_ARGS__); \

     }\

 }while ()

 inline void StrAppend(char buf[], const uint32_t bufLen, uint32_t &offset, const char *fmt, ...)

 {

     va_list argptr;

     va_start(argptr, fmt);

     if (offset < bufLen)

     {

         offset += vsnprintf(buf + offset, bufLen - offset, fmt, argptr);

     }

     va_end(argptr);

 }

 int32_t main(int32_t argc, char *argv[])

 {

     char buf[] = {  };

     uint32_t offset = ;

     StrAppend(buf, , offset, "%d ", );

     StrAppend(buf, , offset, ",%s--", "qwe");

     StrAppend(buf, , offset, ",%0.2f!!!", 1.0);

     printf("%s\n", buf);

     offset = ;

     STRAPPEND(buf, , offset, "%d ", );

     STRAPPEND(buf, , offset, ",%s--", "qwe1");

     STRAPPEND(buf, , offset, ",%0.3f!!!", 11.0);

     printf("%s\n", buf);

     return ;

 }