C in a Nutshell

Name

iswblank

Synopsis

Ascertains whether a given wide character is a space or tab character

#include <wctype.h>
intiswblank( wint_t wc );

The iswblank() function is the wide-character version of the isblank() character classification function. It tests whether its wide character argument is either a space or a tab character. In the default locale C, iswblank() returns a nonzero value (that is, true) only for the argument values L' ' (space) and L'\t' (horizontal tab); these are called the standard blank wide characters. In other locales, iswblank() may also be true for other wide characters for which iswspace() also returns true.

Example

See the example for iswalpha() in this chapter.

See Also

The corresponding function for byte characters, isblank(); iswalnum(), iswalpha(), iswcntrl(), iswdigit(), iswgraph(), iswlower(), iswprint(), iswpunct(), iswspace(), iswupper(), iswxdigit(), setlocale(); the extensible wide-character classification function, iswctype()