微软定义的标准类型

Type	Description	Declared In
clock_t structure	Stores time values; used by clock.	TIME.H
_complex structure	Stores real and imaginary parts of complex numbers; used by _cabs.	MATH.H
_dev_t short or unsigned integer	Represents device handles.	SYS/TYPES.H
div_t, ldiv_t structures	Store values returned by div and ldiv, respectively.	STDLIB.H
_exception structure	Stores error information for _matherr.	MATH.H
FILE structure	Stores information about current state of stream; used in all stream I/O operations.	STDIO.H
_finddata_t, _wfinddata_t, _wfinddatai64_t structures	_finddata_t stores file-attribute information returned by _findfirst and _findnext. _wfinddata_t stores file-attribute information returned by _wfindfirst and _wfindnext. _wfinddatai64_t stores file-attribute information returned by _wfindfirsti64 and _wfindnexti64.	_finddata_t: IO.H _wfinddata_t: IO.H, WCHAR.H _wfinddatai64_t: IO.H, WCHAR.H
_FPIEEE_RECORD structure	Contains information pertaining to IEEE floating-point exception; passed to user-defined trap handler by _fpieee_flt.	FPIEEE.H
fpos_t (long integer, __int64, or structure, depending on the target platform)	Used by fgetpos and fsetpos to record information for uniquely specifying every position within a file.	STDIO.H
_HEAPINFO structure	Contains information about next heap entry for _heapwalk.	MALLOC.H
jmp_buf array	Used by setjmp and longjmp to save and restore program environment.	SETJMP.H
lconv structure	Contains formatting rules for numeric values in different countries.	LOCALE.H
_off_t long integer	Represents file-offset value.	SYS/TYPES.H
_onexit_t pointer	Returned by _onexit.	STDLIB.H
_PNH pointer to function	Type of argument to _set_new_handler.	NEW.H
ptrdiff_t integer	Result of subtraction of two pointers.	STDDEF.H
sig_atomic_t integer	Type of object that can be modified as atomic entity, even in presence of asynchronous interrupts; used with signal.	SIGNAL.H
size_t unsigned integer	Result of sizeof operator.	STDDEF.H and other include files
_stat structure	Contains file-status information returned by _stat and _fstat.	SYS/STAT.H
time_t long integer	Represents time values in mktime and time.	TIME.H
_timeb structure	Used by _ftime to store current system time.	SYS/TIMEB.H
tm structure	Used by asctime, gmtime, localtime, mktime, and strftime to store and retrieve time information.	TIME.H
_utimbuf structure	Stores file access and modification times used by _utime to change file-modification dates.	SYS/UTIME.H
va_list structure	Used to hold information needed by va_arg and va_end macros. Called function declares variable of type va_list that can be passed as argument to another function.	STDARG.H
wchar_t internal type of a wide character	Useful for writing portable programs for international markets.	STDDEF.H, STDLIB.H
wctrans_t integer	Represents locale-specific character mappings.	WCTYPE.H
wctype_t integer	Can represent all characters of any national character set.	WCHAR.H
wint_t integer	Type of data object that can hold any wide character or wide end-of-file value.	WCHAR.H