LOG_INFO

int printf (const char* fmt, ...);

int vprintf (const char* format, va_list ap);

#define SRC __FILE__,__LINE__ //加括号可能有问题

void LOG_INFO(const char* file_name, const int line, const char* fmt, ...)
{
    va_list ap;
    va_start (ap, info);
    printf ("%s %d :", file_name, line);//file_name可能是path_name
    vprintf (info, ap);
    printf ("\n");
    va_end(ap);
    return;
}