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Mac OS X / Darwin man pages : isgraph (3)
isgraph (3)

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Name

isgraph - printing character test (space character exclusive)

Library

Standard C Library (libc, -lc)

Synopsis

#include <ctype.h>

int
isgraph(int c);

Description

The isgraph() function tests for any printing character except space (` `) and other locale specific space-like characters. For single C chars locales (see multibyte(3) ) the value of the argument is representable as an unsigned char or the value of EOF. In the ASCII character set, this includes the following characters (with their numeric values shown in octal):

041 ``!''
042 ``"'' 043 ``#'' 044 ``$'' 045 ``%''
046 ``&''
047 ``''' 050 ``('' 051 ``)'' 052 ``*''
053 ``+''
054 ``,'' 055 ``-'' 056 ``.'' 057 ``/''
060 ``0''
061 ``1'' 062 ``2'' 063 ``3'' 064 ``4''
065 ``5''
066 ``6'' 067 ``7'' 070 ``8'' 071 ``9''
072 ``:''
073 ``;'' 074 ``<'' 075 ``='' 076 ``>''
077 ``?''
100 ``@'' 101 ``A'' 102 ``B'' 103 ``C''
104 ``D''
105 ``E'' 106 ``F'' 107 ``G'' 110 ``H''
111 ``I''
112 ``J'' 113 ``K'' 114 ``L'' 115 ``M''
116 ``N''
117 ``O'' 120 ``P'' 121 ``Q'' 122 ``R''
123 ``S''
124 ``T'' 125 ``U'' 126 ``V'' 127 ``W''
130 ``X''
131 ``Y'' 132 ``Z'' 133 ``['' 134 ``\''
135 ``]''
136 ``^'' 137 ``_'' 140 ```'' 141 ``a''
142 ``b''
143 ``c'' 144 ``d'' 145 ``e'' 146 ``f''
147 ``g''
150 ``h'' 151 ``i'' 152 ``j'' 153 ``k''
154 ``l''
155 ``m'' 156 ``n'' 157 ``o'' 160 ``p''
161 ``q''
162 ``r'' 163 ``s'' 164 ``t'' 165 ``u''
166 ``v''
167 ``w'' 170 ``x'' 171 ``y'' 172 ``z''
173 ``{''
174 ``|'' 175 ``}'' 176 ``~''

Return Values

The isgraph() function returns zero if the character tests false and returns non-zero if the character tests true.

Compatibility

Although isgraph() accepts arguments outside of the range of the unsigned char type in locales with large character sets, this is a 4.4BSD extension and the iswgraph() function should be used instead for maximum portability.

See Also

ctype(3) , iswgraph(3) , multibyte(3) , ascii(7)

Standards

The isgraph() function conforms to ISO/IEC 9899:1990 (``ISO C89'').

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