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isgraph, iswgraph, _isgraph_l, _iswgraph_l

Determines whether an integer represents a graphical character.

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
);

c

Integer to test.

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

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.

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

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