iswprint - cppreference.com (original) (raw)

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

[edit] Parameters

[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

#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