<cwctype> (wctype.h)

Wide character type

This header declares a set of functions to classify and transform individual wide characters.

For more info on how the standard ASCII character set is classified using the "C" locale, see <cctype>.

Functions

Character classification functions

They check whether the character passed as parameter belongs to a certain category:

iswalnum: Check if wide character is alphanumeric (function)

iswalpha: Check if wide character is alphabetic (function)

iswblank: Check if wide character is blank (function)

iswcntrl: Check if wide character is a control character (function)

iswdigit: Check if wide character is decimal digit (function)

iswgraph: Check if wide character has graphical representation (function)

iswlower: Check if wide character is lowercase letter (function)

iswprint: Check if wide character is printable (function)

iswpunct: Check if wide character is punctuation character (function)

iswspace: Check if wide character is a white-space (function)

iswupper: Check if wide character is uppercase letter (function)

iswxdigit: Check if wide character is hexadecimal digit (function)

Character conversion functions

Two functions that convert between letter cases:

towlower: Convert uppercase wide character to lowercase (function)

towupper: Convert lowercase wide character to uppercase (function)

Extensible classification/conversion functions

iswctype: Check if wide character has property (function)

towctrans: Convert using transformation (function)

wctrans: Return character transformation (function)

wctype: Return character property (function)

Types

wctrans_t: Wide character transformation (type)

wctype_t: Wide character type (type)

wint_t: Wide character integral type (type)

Constants

WEOF: Wide End-of-File (constant)

functions

types