The
wctype.h header declares functions that deal with wide character properties.
The following are declared as functions and are also defined as macros:
| iswalnum() |
iswalpha() |
iswblank() |
iswcntrl() |
iswctype() |
| iswdigit() |
iswgraph() |
iswlower() |
iswprint() |
iswpunct() |
| iswspace() |
iswupper() |
iswxdigit() |
towlower() |
towupper() |
| wctype() |
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The following are declared as prototypes only:
| towctrans() |
wctrans() |
wctype() |
The wctype.h header defines the types wctrans_t, wctype_t and wint_t.
The wctype.h defines the macro WEOF, which expands to a constant expression
of type wint_t, whose value does not correspond to
any member of the extended character set. The macro WEOF indicates
End Of File (EOF).