iswctype - cppreference.com (original) (raw)

| | | | | ------------------------------------------- | | ----------- | | 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.

[edit] Parameters

[edit] 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.

[edit] Example

#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

[edit] 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)

[edit] See also

| | looks up a character classification category in the current C locale (function) [edit] | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |