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 );
Parameters
- c
-
Integer to test.
- locale
-
The locale to use.
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.
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 debug 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 | Compatibility |
|---|---|---|
| isprint | <ctype.h> | ANSI, Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
| iswprint | <ctype.h> or <wchar.h> | ANSI, Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
| _isprint_l | <ctype.h> | Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
| _iswprint_l | <ctype.h> or <wchar.h> | Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
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.
