7.25.2 Wide character classification utilities

• 7.25.2.1 Wide character classification functions
  • 7.25.2.1.1 The iswalnum function
  • 7.25.2.1.2 The iswalpha function
  • 7.25.2.1.3 The iswblank function
  • 7.25.2.1.4 The iswcntrl function
  • 7.25.2.1.5 The iswdigit function
  • 7.25.2.1.6 The iswgraph function
  • 7.25.2.1.7 The iswlower function
  • 7.25.2.1.8 The iswprint function
  • 7.25.2.1.9 The iswpunct function
  • 7.25.2.1.10 The iswspace function
  • 7.25.2.1.11 The iswupper function
  • 7.25.2.1.12 The iswxdigit function
• 7.25.2.2 Extensible wide character classification functions
  • 7.25.2.2.1 The iswctype function
  • 7.25.2.2.2 The wctype function

1

The header <wctype.h> declares several functions useful for classifying wide characters.

2

The term printing wide character refers to a member of a locale-specific set of wide characters, each of which occupies at least one printing position on a display device. The term control wide character refers to a member of a locale-specific set of wide characters that are not printing wide characters.