isgraph, iswgraph, _isgraph_l, _iswgraph_l

Determines whether an integer represents a graphical character.

Syntax

int isgraph(  
   int c   
);  
int iswgraph(  
   wint_t c   
);  
int _isgraph_l(  
   int c,  
   _locale_t locale  
);  
int _iswgraph_l(  
   wint_t c,  
   _locale_t locale  
);  

Parameters

c
Integer to test.

Return Value

Each of these routines returns nonzero if c is a particular representation of a printable character other than a space. isgraph returns a nonzero value if c is a printable character other than a space. iswgraph returns a nonzero value if c is a printable wide character other than a wide character space. Each of these routines returns 0 if c does not satisfy the test condition.

The versions of these functions that have the _l suffix use the locale that's passed in instead of the current locale for their locale-dependent behavior. For more information, see Locale.

The behavior of isgraph and _isgraph_l is undefined if c is not EOF or in the range 0 through 0xFF, inclusive. When a debug CRT library is used and c is not one of these values, the functions raise an assertion.

Generic-Text Routine Mappings

TCHAR.H routine _UNICODE & _MBCS not defined _MBCS defined _UNICODE defined
_istgraph isgraph _ismbcgraph iswgraph
_istgraph_l _isgraph_l _ismbcgraph_l _iswgraph_l

Requirements

Routine Required header
isgraph <ctype.h>
iswgraph <ctype.h> or <wchar.h>
_isgraph_l <ctype.h>
_iswgraph_l <ctype.h> or <wchar.h>

For additional compatibility information, see Compatibility.

See Also

Character Classification
Locale
is, isw Routines