NAME
isprint —
printing character test (space
character inclusive)
LIBRARY
library “libc”
SYNOPSIS
#include
<ctype.h>
int
isprint(int
c);
DESCRIPTION
Theisprint()
function tests for any printing character, including space
(‘ ’). 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):
| 040 sp | 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 isprint() 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 iswprint()
function should be used instead.
SEE ALSO
STANDARDS
The isprint() function conforms to
ISO/IEC 9899:1990
(“ISO C90”).