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. The value of the argument must be representable as an
unsigned char or the value of
EOF.
In the ASCII character set, this includes the following characters (preceded by their numeric values, 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
The 4.4BSD extension of accepting
arguments outside of the range of the unsigned char
type in locales with large character sets is considered obsolete and may not
be supported in future releases. The iswgraph()
function should be used instead.
SEE ALSO
STANDARDS
The isgraph() function conforms to
ISO/IEC 9899:1990
(“ISO C90”).