isprint, iswprint, _isprint_l, _iswprint_l
Determine if an integer represents a printable character.
int isprint( int c ); int iswprint( wint_t c ); int _isprint_l( int c, _locale_t locale ); int _iswprint_l( wint_t c, _locale_t locale );
Each of these routines returns nonzero if c is a particular representation of a printable character. isprint returns a nonzero value if c is a printable character, including the space character (0x20 – 0x7E). iswprint returns a nonzero value if c is a printable wide character, including the space wide character. Each of these routines returns 0 if c does not satisfy the test condition.
The result of the test condition for these functions depends on the LC_CTYPE category setting of the locale; see setlocale for more information. The versions of these functions without the _l suffix use the current locale for any locale-dependent behavior; the versions with the _l suffix are identical except that they use the locale passed in instead. For more information, see Locale.
When used with a debug CRT library, isprint will display a CRT assert if passed a parameter that is not EOF or in the range of 0 through 0xFF. When used with a release CRT library, isprint will use the parameter as an index into an array, with undefined results if the parameter is not EOF or in the range of 0 through 0xFF.
TCHAR.H routine | _UNICODE & _MBCS not defined | _MBCS defined | _unicode defined |
|---|---|---|---|
_istprint | isprint | iswprint |
Routine | Required header |
|---|---|
isprint | <ctype.h> |
iswprint | <ctype.h> or <wchar.h> |
_isprint_l | <ctype.h> |
_iswprint_l | <ctype.h> or <wchar.h> |
For additional compatibility information, see Compatibility in the Introduction.
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.
