iswgraph

int iswgraph( wint_t ch );

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.

Parameters

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

#include <stdio.h>
#include <wchar.h>
#include <wctype.h>
#include <locale.h>
 
int main(void)
{
    wchar_t c = L'\u2602'; // the Unicode character Umbrella ('☂')
    printf("in the default locale, iswgraph(%#x) = %d\n", c, !!iswgraph(c));
    setlocale(LC_ALL, "en_US.utf8");
    printf("in Unicode locale, iswgraph(%#x) = %d\n", c, !!iswgraph(c));
}

in the default locale, iswgraph(0x2602) = 0
in Unicode locale, iswgraph(0x2602) = 1

References

• C11 standard (ISO/IEC 9899:2011):
• 7.30.2.1.6 The iswgraph function (p: 449-450)
• C99 standard (ISO/IEC 9899:1999):
• 7.25.2.1.6 The iswgraph function (p: 395-396)

See also