iswprint
From cppreference.com
Defined in header <wctype.h>
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int iswprint( wint_t ch ); |
(since C95) | |
Checks if the given wide character can be printed, i.e. it is either a number (0123456789
), an uppercase letter (ABCDEFGHIJKLMNOPQRSTUVWXYZ
), a lowercase letter (abcdefghijklmnopqrstuvwxyz
), a punctuation character (!"#$%&'()*+,-./:;<=>?@[\]^_`{!}~
), space or any printable character specific to the current C locale.
Contents |
[edit] Parameters
ch | - | wide character |
[edit] Return value
Non-zero value if the wide character can be printed, zero otherwise.
[edit] Notes
ISO 30112 specifies which Unicode characters are included in POSIX print category.
[edit] Example
Run this code
#include <locale.h> #include <stdio.h> #include <wchar.h> #include <wctype.h> int main(void) { wchar_t c = L'\u2002'; // Unicode character 'EN SPACE' printf("in the default locale, iswprint(%#x) = %d\n", c, !!iswprint(c)); setlocale(LC_ALL, "en_US.utf8"); printf("in Unicode locale, iswprint(%#x) = %d\n", c, !!iswprint(c)); wchar_t c2 = L'\x82'; // break permitted printf("in Unicode locale, iswprint(%#x) = %d\n", c2, !!iswprint(c2)); }
Output:
in the default locale, iswprint(0x2002) = 0 in Unicode locale, iswprint(0x2002) = 1 in Unicode locale, iswprint(0x82) = 0
[edit] References
- C23 standard (ISO/IEC 9899:2024):
- 7.30.2.1.8 The iswprint function (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.30.2.1.8 The iswprint function (p: TBD)
- C11 standard (ISO/IEC 9899:2011):
- 7.30.2.1.8 The iswprint function (p: 450)
- C99 standard (ISO/IEC 9899:1999):
- 7.25.2.1.8 The iswprint function (p: 396)
[edit] See also
checks if a character is a printing character (function) | |
C++ documentation for iswprint
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ASCII values | characters |
isprint |
|||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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
|