?? time.h
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#ifndef SYS_TIME_H_INCLUDED#define SYS_TIME_H_INCLUDED/* * sys/time.h doesn't exist on NT */struct timeval { long tv_sec; /* seconds */ long tv_usec; /* microseconds */ };struct timezone { int tz_minuteswest; /* minutes west of Greenwich */ int tz_dsttime; /* type of dst correction */ };void gettimeofday (struct timeval *, struct timezone *);#endif /* SYS_TIME_H_INCLUDED *//* end of sys/time.h */?? 快捷鍵說明
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