iswctype
From cppreference.com
| Defined in header <wctype.h>
|
||
int iswctype( wint_t wc, wctype_t desc );
|
(since C95) | |
Classifies the wide character wc using the current C locale's LC_CTYPE category identified by desc.
Parameters
| wc | - | the wide character to classify |
| desc | - | the LC_CTYPE category, obtained from a call to wctype |
Return value
Non-zero if the character wc has the property identified by desc in LC_CTYPE facet of the current C locale, zero otherwise.
Example
Run this code
#include <locale.h>
#include <stdio.h>
#include <wchar.h>
#include <wctype.h>
const char* classify(wchar_t wc, const char* cat)
{
return iswctype(wc, wctype(cat)) ? "true" : "false";
}
int main(void)
{
setlocale(LC_ALL, "ja_JP.UTF-8");
puts("The character \u6c34 is...");
const char* cats[] = {"digit", "alpha", "space", "cntrl", "jkanji"};
for (int n = 0; n < 5; ++n)
printf("%s?\t%s\n", cats[n], classify(L'\u6c34', cats[n]));
}
Output:
The character 水 is...
digit? false
alpha? true
space? false
cntrl? false
jkanji? true
References
- C23 standard (ISO/IEC 9899:2024):
- 7.30.2.2.1 The iswctype function (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.30.2.2.1 The iswctype function (p: TBD)
- C11 standard (ISO/IEC 9899:2011):
- 7.30.2.2.1 The iswctype function (p: 451-452)
- C99 standard (ISO/IEC 9899:1999):
- 7.25.2.2.1 The iswctype function (p: 397-398)
See also
(C95) |
looks up a character classification category in the current C locale (function) |