std::iswgraph
From cppreference.com
| Defined in header <cwctype>
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| int iswgraph( std::wint_t ch ); |
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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
| checks if a character is classified as graphical by a locale (function template) | |
| checks if a character is a graphical character (function) | |
| C documentation for iswgraph
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| ASCII values | characters |
isgraph |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
|
GHIJKLMNOPQRSTUVWXYZ
|
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
|
ghijklmnopqrstuvwxyz
|
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
|