struct timeb mtp;
ftime(&mtp);
memset(STIME,0,31);
t = localtime(&mtp.time);
sprintf(STIME, "%02d%02d %02d:%02d:%02d.%03d",
t->tm_mon+1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec, mtp.millitm);

我找到一个例子：
struct tm *pt;
long ti;
time(&ti);
pt=localtime(&ti);