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{cout << "[" << level << "] ";time_t t = time(nullptr);struct tm *ctime = localtime(&t);char leftbuffer[1024];snprintf(leftbuffer, sizeof(leftbuffer), "[%d:%d:%d]",ctime->tm_hour, ctime->tm_min, ctime->tm_sec);cout << "[" << message << "] "<<leftbuffer ;cout << "[" << file << " : " << line << "]" << endl;">