std::iswgraph

 

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Null-terminated wide strings

Functions
Character classification
iswalnum iswalpha iswlower iswupper iswdigit iswxdigit wctype	iswblank (C++11) iswctype iswcntrl iswgraph iswspace iswprint iswpunct
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towlower towupper	towctrans wctrans
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wcslen wcscmp wcscoll wcsncmp wcschr wcsrchr	wcspbrk wcsspn wcscspn wcsstr wcstok
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wcscpy wcsncpy wcsxfrm	wcscat wcsncat
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Types wctrans_t wctype_t wint_t	Macros WCHAR_MIN WCHAR_MAX WEOF

 

Defined in header <cwctype>
int iswgraph(std::wint_t ch );

Checks if the given wide character has a graphical representation, i.e. it is either a number (0123456789), an uppercase letter (ABCDEFGHIJKLMNOPQRSTUVWXYZ), a lowercase letter (abcdefghijklmnopqrstuvwxyz), a punctuation character (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~) or any graphical character specific to the current C locale.

If the value of ch is neither representable as a wchar_t nor equal to the value of the macro WEOF, the behavior is undefined.

Parameters

ch

-

wide character

Return value

Non-zero value if the wide character has a graphical representation character, zero otherwise.

Notes

ISO 30112 specifies which Unicode characters are include in POSIX graph category.

Example

Run this code

#include <clocale>#include <cwctype>#include <iostream>   int main(){wchar_t c = L'\u2602';// the Unicode character Umbrella ('☂')   std::cout<<std::hex<<std::showbase<<std::boolalpha<<"in the default locale, iswgraph("<<static_cast<std::wint_t>(c)<<") = "<<static_cast<bool>(std::iswgraph(c))<<'\n';   std::setlocale(LC_ALL, "en_US.utf8");std::cout<<"in Unicode locale, iswgraph("<<static_cast<std::wint_t>(c)<<") = "<<static_cast<bool>(std::iswgraph(c))<<'\n';}

Output:

in the default locale, iswgraph(0x2602) = false in Unicode locale, iswgraph(0x2602) = true

See also

isgraph(std::locale)	checks if a character is classified as graphical by a locale (function template)
isgraph	checks if a character is a graphical character (function)
C documentation for iswgraph

ASCII values			characters	iscntrl iswcntrl	isprint iswprint	isspace iswspace	isblank iswblank	isgraph iswgraph	ispunct iswpunct	isalnum iswalnum	isalpha iswalpha	isupper iswupper	islower iswlower	isdigit iswdigit	isxdigit iswxdigit
decimal	hexadecimal	octal
0–8	\x0–\x8	\0–\10	control codes (NUL, etc.)	≠0	0	0	0	0	0	0	0	0	0	0	0
9	\x9	\11	tab (\t)	≠0	0	≠0	≠0	0	0	0	0	0	0	0	0
10–13	\xA–\xD	\12–\15	whitespaces (\n, \v, \f, \r)	≠0	0	≠0	0	0	0	0	0	0	0	0	0
14–31	\xE–\x1F	\16–\37	control codes	≠0	0	0	0	0	0	0	0	0	0	0	0
32	\x20	\40	space	0	≠0	≠0	≠0	0	0	0	0	0	0	0	0
33–47	\x21–\x2F	\41–\57	!"#$%&'()*+,-./	0	≠0	0	0	≠0	≠0	0	0	0	0	0	0
48–57	\x30–\x39	\60–\71	0123456789	0	≠0	0	0	≠0	0	≠0	0	0	0	≠0	≠0
58–64	\x3A–\x40	\72–\100	:;<=>?@	0	≠0	0	0	≠0	≠0	0	0	0	0	0	0
65–70	\x41–\x46	\101–\106	ABCDEF	0	≠0	0	0	≠0	0	≠0	≠0	≠0	0	0	≠0
71–90	\x47–\x5A	\107–\132	GHIJKLMNOP QRSTUVWXYZ	0	≠0	0	0	≠0	0	≠0	≠0	≠0	0	0	0
91–96	\x5B–\x60	\133–\140	[\]^_`	0	≠0	0	0	≠0	≠0	0	0	0	0	0	0
97–102	\x61–\x66	\141–\146	abcdef	0	≠0	0	0	≠0	0	≠0	≠0	0	≠0	0	≠0
103–122	\x67–\x7A	\147–\172	ghijklmnop qrstuvwxyz	0	≠0	0	0	≠0	0	≠0	≠0	0	≠0	0	0
123–126	\x7B–\x7E	\172–\176	{|}~	0	≠0	0	0	≠0	≠0	0	0	0	0	0	0
127	\x7F	\177	backspace character (DEL)	≠0	0	0	0	0	0	0	0	0	0	0	0