1.\" Copyright (c) 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the American National Standards Committee X3, on Information 6.\" Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)isprint.3 8.1 (Berkeley) 6/4/93 33.\" 34.Dd December 19, 2022 35.Dt ISPRINT 3 36.Os 37.Sh NAME 38.Nm isprint , 39.Nm isprint_l 40.Nd printing character test (space character inclusive) 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In ctype.h 45.Ft int 46.Fn isprint "int c" 47.Ft int 48.Fn isprint_l "int c" "locale_t loc" 49.Sh DESCRIPTION 50The 51.Fn isprint 52and 53.Fn isprint_l 54functions test for any printing character, including space 55.Pq Ql "\ " . 56The value of the argument must be representable as an 57.Vt "unsigned char" 58or the value of 59.Dv EOF . 60.Pp 61In the ASCII character set, this includes the following characters 62(with their numeric values shown in octal): 63.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ 64.It "\&040\ sp" Ta "041\ ``!''" Ta "042\ ``""''" Ta "043\ ``#''" Ta "044\ ``$''" 65.It "\&045\ ``%''" Ta "046\ ``&''" Ta "047\ ``'''" Ta "050\ ``(''" Ta "051\ ``)''" 66.It "\&052\ ``*''" Ta "053\ ``+''" Ta "054\ ``,''" Ta "055\ ``-''" Ta "056\ ``.''" 67.It "\&057\ ``/''" Ta "060\ ``0''" Ta "061\ ``1''" Ta "062\ ``2''" Ta "063\ ``3''" 68.It "\&064\ ``4''" Ta "065\ ``5''" Ta "066\ ``6''" Ta "067\ ``7''" Ta "070\ ``8''" 69.It "\&071\ ``9''" Ta "072\ ``:''" Ta "073\ ``;''" Ta "074\ ``<''" Ta "075\ ``=''" 70.It "\&076\ ``>''" Ta "077\ ``?''" Ta "100\ ``@''" Ta "101\ ``A''" Ta "102\ ``B''" 71.It "\&103\ ``C''" Ta "104\ ``D''" Ta "105\ ``E''" Ta "106\ ``F''" Ta "107\ ``G''" 72.It "\&110\ ``H''" Ta "111\ ``I''" Ta "112\ ``J''" Ta "113\ ``K''" Ta "114\ ``L''" 73.It "\&115\ ``M''" Ta "116\ ``N''" Ta "117\ ``O''" Ta "120\ ``P''" Ta "121\ ``Q''" 74.It "\&122\ ``R''" Ta "123\ ``S''" Ta "124\ ``T''" Ta "125\ ``U''" Ta "126\ ``V''" 75.It "\&127\ ``W''" Ta "130\ ``X''" Ta "131\ ``Y''" Ta "132\ ``Z''" Ta "133\ ``[''" 76.It "\&134\ ``\e\|''" Ta "135\ ``]''" Ta "136\ ``^''" Ta "137\ ``_''" Ta "140\ ```''" 77.It "\&141\ ``a''" Ta "142\ ``b''" Ta "143\ ``c''" Ta "144\ ``d''" Ta "145\ ``e''" 78.It "\&146\ ``f''" Ta "147\ ``g''" Ta "150\ ``h''" Ta "151\ ``i''" Ta "152\ ``j''" 79.It "\&153\ ``k''" Ta "154\ ``l''" Ta "155\ ``m''" Ta "156\ ``n''" Ta "157\ ``o''" 80.It "\&160\ ``p''" Ta "161\ ``q''" Ta "162\ ``r''" Ta "163\ ``s''" Ta "164\ ``t''" 81.It "\&165\ ``u''" Ta "166\ ``v''" Ta "167\ ``w''" Ta "170\ ``x''" Ta "171\ ``y''" 82.It "\&172\ ``z''" Ta "173\ ``{''" Ta "174\ ``|''" Ta "175\ ``}''" Ta "176\ ``~''" 83.El 84.Pp 85The 86.Fn isprint_l 87function takes an explicit locale argument, whereas the 88.Fn isprint 89function uses the current global or per-thread locale. 90.Sh RETURN VALUES 91The 92.Fn isprint 93and 94.Fn isprint_l 95functions return zero if the character tests false and 96return non-zero if the character tests true. 97.Sh COMPATIBILITY 98The 99.Bx 4.4 100extension of accepting arguments outside of the range of the 101.Vt "unsigned char" 102type in locales with large character sets is considered obsolete 103and may not be supported in future releases. 104The 105.Fn iswprint 106or 107.Fn iswprint_l 108function should be used instead. 109.Sh SEE ALSO 110.Xr ctype 3 , 111.Xr ctype_l 3 , 112.Xr iswprint 3 , 113.Xr iswprint_l 3 , 114.Xr xlocale 3 , 115.Xr ascii 7 116.Sh STANDARDS 117The 118.Fn isprint 119function conforms to 120.St -isoC . 121.Sh HISTORY 122The 123.Fn isprint 124function first appeared in 125.At v7 . 126