NAME
isgraph, isgraph_l
— printing character test (space
character exclusive)
LIBRARY
library “libc”
SYNOPSIS
#include
<ctype.h>
int
isgraph(int
c);
int
isgraph_l(int
c, locale_t
locale);
DESCRIPTION
Theisgraph()
and isgraph_l() functions test 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 (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 ``~'' |
The
isgraph_l()
function takes an explicit locale argument, whereas
the isgraph() function uses the current global or
per-thread locale.
RETURN VALUES
The isgraph() and
isgraph_l() functions return zero if the character
tests false and return 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() and
iswgraph_l() functions should be used instead.
SEE ALSO
ctype(3), ctype_l(3), iswgraph(3), iswgraph_l(3), xlocale(3), ascii(7)
STANDARDS
The isgraph() function conforms to
ISO/IEC 9899:1990 (“ISO C90”).
The isgraph_l() function conforms to
IEEE Std 1003.1-2008 (“POSIX.1”).