isgraph, iswgraph, _isgraph_l, _iswgraph_l
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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.
.NET Framework Equivalent
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.