.\" Copyright (c) 1999 Andries Brouwer (aeb@cwi.nl)
.\"
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" the License, or (at your option) any later version.
.\"
.\" The GNU General Public License's references to "object code"
.\" and "executables" are to be interpreted as the output of any
.\" document formatting or typesetting system, including
.\" intermediate and printed output.
.\"
.\" This manual is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
.\" License along with this manual; if not, write to the Free
.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
.\" USA.
.\"
.\"
.\" Earlier versions of this page influenced the present text.
.\" It was derived from a Berkeley page with version
.\"       @(#)printf.3    6.14 (Berkeley) 7/30/91
.\" converted for Linux by faith@cs.unc.edu, updated by
.\" Helmut.Geyer@iwr.uni-heidelberg.de, agulbra@troll.no and Bruno Haible.
.\"
.\" 1999-11-25 aeb - Rewritten, using SUSv2 and C99.
.\" 2000-07-26 jsm28@hermes.cam.ac.uk - three small fixes
.\" 2000-10-16 jsm28@hermes.cam.ac.uk - more fixes
.\"
.\" Japanese Version Copyright (c) 1997 YOSHINO Takashi all rights reserved.
.\" Translated 1998-02-17, YOSHINO Takashi <yoshino@civil.jcn.nihon-u.ac.jp>
.\" Updated 2000-10-02, Kentaro Shirakata <argrath@ub32.org>
.\" Updated 2001-01-29, Kentaro Shirakata <argrath@ub32.org>
.\" Updated 2002-01-03, Kentaro Shirakata <argrath@ub32.org>
.\" Updated 2002-10-17, Kentaro Shirakata <argrath@ub32.org>
.\" Updated 2005-03-15, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\" Updated 2006-07-20, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\" Updated 2008-02-10, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.77
.\"
.\" WORD: conversion specifier	Ѵ
.\" WORD: length modifier	Ĺ
.\"
.TH PRINTF 3  2007-11-26 "GNU" "Linux Programmer's Manual"
.SH ̾
printf, fprintf, sprintf, snprintf, vprintf, vfprintf, vsprintf, vsnprintf
\- ꤵ줿񼰤ѴƽϤԤ
.SH 
.B #include <stdio.h>
.sp
.BI "int printf(const char *" format ", ...);"
.br
.BI "int fprintf(FILE *" stream ", const char *" format ", ...);"
.br
.BI "int sprintf(char *" str ", const char *" format ", ...);"
.br
.BI "int snprintf(char *" str ", size_t " size ", const char *" format ", ...);"
.sp
.B #include <stdarg.h>
.sp
.BI "int vprintf(const char *" format ", va_list " ap );
.br
.BI "int vfprintf(FILE *" stream ", const char *" format ", va_list " ap );
.br
.BI "int vsprintf(char *" str ", const char *" format ", va_list " ap );
.br
.BI "int vsnprintf(char *" str ", size_t " size ", const char *" format ", va_list " ap );
.sp
.in -4n
glibc εǽޥ׷
.RB ( feature_test_macros (7)
):
.in
.sp
.ad l
.BR snprintf (),
.BR vsnprintf ():
_BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE; or
.I "cc -std=c99"
.ad b
.SH 
.BR printf ()
ؿ롼פϡʲǽҤ٤褦ˡ
.I format
˽äƽϤΤǤ롣
.BR printf ()

.BR vprintf ()
ϽϤ
.I stdout
(ɸϥȥ꡼) ˽񤭽Ф
.BR fprintf ()

.BR vfprintf ()
ϽϤꤵ줿
.I stream
˽񤭽Ф
.BR sprintf (),
.BR snprintf (),
.BR vsprintf (),
.BR vsnprintf ()
ϽϤʸ
.IR  str
˽񤭹ࡣ
.PP
.BR snprintf ()

.BR vsnprintf ()
Ϻ
.I size
ХȤ
.I str
˽񤭹
.RI ( size
ˤʸü '\e0' ޤޤ)
.PP
.BR vprintf (),
.BR vfprintf (),
.BR vsprintf (),
.BR vsnprintf ()
γƴؿϤ줾
.BR printf (),
.BR fprintf (),
.BR sprintf (),
.BR snprintf (),
γƴؿǤꡢѿ
.I va_list
ȤƸƤӽФۤʤ롣
δؿǤ
.I va_end
ޥϸƤӽФʤ
δؿ
.I va_arg
ƤӽФΤǡƤӽФ
.I ap
̤ͤǤ롣
.BR stdarg (3)
򻲾ȤΤȡ
.PP
 8 Ĥδؿ
.I format
ʸ˽äƽϤ񤭽Ф
.I format
ʸϡ³ (ޤ
.BR stdarg (3)
βĹȤäƥǤ)
ɤΤ褦ѴƽϤ뤫ꤹ롣
.SS ֤
ˤϡ嵭δؿϽ񤭹ޤ줿ʸ֤
(ʸκǸ򼨤˻Ѥ `\e0' Ͽ˴ޤޤʤ)

.BR snprintf ()

.BR vsnprintf ()
ϡ
.I size
ХȤۤʸ񤭹ޤʤ
.RI ( size
ˤʸü '\e0' ޤޤ)
¤ˤäƽϤڤͤ줿ˤϡ
⤷ʬʥڡн񤭹ޤ줿ǤʸθĿ
(ʸü '\e0' ) ֤
äơ֤ͤ
.I size
ʾä硢Ϥڤͤ줿Ȥ̣
(Ҥդ⻲ȤΤ)

顼ȯϡο֤
.SS եޥåʸΥեޥå
եޥåʸʸǡ
(⤷ʤ) եȾ֤ǻϤޤꡢեȾ֤ǽ롣
եޥåѤʸ 0 İʾ̿ (directives) ˤäƹ롣
̿ˤϡ̾ʸѴ (conversion specifications) 롣
̾ʸ
.B %
ʳʸǡϥȥ꡼ˤΤޤޥԡ롣
Ѵϡ줾줬 0 İʾΰ롣
Ѵʸ
.B %
ǻϤޤꡢ
.I "Ѵ (conversion specifier)"
ǽ롣
.B %
ѴҤδ֤ˤϡ0 İʾ
.I ե饰 
Ǿ
.I ե 
.I  
.I Ĺ
 (ν) ֤ȤǤ롣

 (γʾ夲θ) ѴҤɽΤбʤФʤʤ
ǥեȤǤϡ`*' ѴҤФƤ˼ΰ׵ᤵ졢
ϻꤵ줿ǻѤƤ
(ꤵ줿θĿԽʬʤ饨顼Ȥʤ)
ޤɬפʲս `%'  `%m$'
`*' `*m$' Ƚ񤯤Ȥǡ
ŪˤɤΰѤ뤫ꤹ뤳ȤǤ롣
 10ʤ m ϴ˾ΰΰꥹȤǤΰ֤򼨤
(ǽΰֹ椬 1 Ǥ)
äơʲĤǤ롣
.in +4n
.nf

printf("%*d", width, num);

printf("%2$*1$d", width, num);

.fi
.in
Ǥ롣
ܤνǤƱ򷫤֤Ȥ뤳ȤǤ롣
C99 ɸˤϡ Single Unix Specification ͳ `$' ȤäϴޤޤƤʤ
`$' ȤäȤȡѴڤ٤ΰ
ƤΥǻꤷʤФʤʤ
񤷤ʤ `%%' եޥåȤȺäƤ뤫⤷ʤ
`$' ǻꤵֹ˶äƤϤʤʤ
㤨С⤷ 1  3 ꤵȡ 2 եޥåʸΤɤ
ꤵʤФʤʤ

ѴˤϾ 1000 ñ̤ζڤʸȤΤ⤢롣
ºݤˤɤʸȤϥ
.B LC_NUMERIC
ˤ롣
POSIX ǤϾ `.' Ѥ
ڤʸϻȤʤ
äơ
.in +4n
.nf

printf("%'.2f", 1234567.89);

.fi
.in
ϡ POSIX Ǥ `1234567.89'  nl_NL Ǥ `1234567,89'
da_DK Ǥ `1.234.567,89' Ȥʤ롣
.SS ե饰ʸ
% ʸθˤ 0 İʾΥե饰ʸ³
.TP
.B #
ͤϡ̤ηפѴ롣
.B o
Ѵξ硢(Ƭʸ 0 ˤʤäƤʤƬ 0 ɲä뤳Ȥ)
ʸκǽʸ 0 ˤ롣
.B x

.B X
Ѵξ硢ͤ 0 ǤʤȤˤʸ `0x'
.RB ( X
Ѵξˤ `0X') Ϳ롣
.BR a ,
.BR A ,
.BR e ,
.BR E ,
.BR f ,
.BR F ,
.BR g ,
.B G
ѴǤϡ ³ʤƤ⡢
ϤˤϾ˾ޤޤ
(̾ϡθ˿³ˤΤߡ
ɽ)
.B g

.B G
Ѵξ硢¾ѴȤϰۤʤꡢΥѴ̤ʤ
¾ѴǤϡ̤̤Ǥ롣
.TP
.B \&0
ͤ򥼥롣
.BR d ,
.BR i ,
.BR o ,
.BR u ,
.BR x ,
.BR X ,
.BR a ,
.BR A ,
.BR e ,
.BR E ,
.BR f ,
.BR F ,
.BR g ,
.B G
ѴǤϡѴͤκ¦ʸ˥롣
.B \&0

.B \-
ξȤꤵ줿ϡ
.B \&0
ե饰̵뤵롣
٤Ѵ
.RB ( d ,
.BR i ,
.BR o ,
.BR u ,
.BR x ,
.BR X )
Ʊ˻ꤵ줿ˤϡ
.B \&0
ե饰̵뤵롣
¾ѴǤϡư̤Ǥ롣
.TP
.B \-
ѴͤեɶǺ·ˤ
(ǥեȤϱ·Ǥ)
.B n
ѴʳǤϡѴ줿ͤ
¦ǤϤʤ¦ʸ䥼롣
.B \-

.B \&0
ξꤵ줿ˤϡ
.B \-
ͥ褵롣
.TP
.B ' '
(1ĤȾѥڡ)
դѴ줿ο˶ (ޤ϶ʸ) ֤롣
.TP
.B +
դѴˤäƽϤˡ (+  \-) ֤롣
ǥեȤǤϡοξΤͿ롣
.B +
Ⱦѥڡ
ξȤƤˤϡ
.B +
ͥ褵롣
.PP
嵭 5 ĤΥե饰 C ɸƤ롣
SUSv2 Ǥϡˤ⤦ĥե饰ʸꤵƤ롣
.TP
.B '
10ʿѴ
.RB ( i ,
.BR d ,
.BR u ,
.BR f ,
.BR F ,
.BR g ,
.BR G )
ˤơ˻꤬ 1000 ñ̤ζڤʸϤ롣
.BR gcc (1)
¿ΥСϡΥץ᤹뤳ȤǤ
ٹϤ뤳Ȥդ衣
%'F  SUSv2 ˤϴޤޤƤʤ
.PP
glibc 2.2 Ǥϡ˰ĥե饰ʸɲäƤ롣
.TP
.B I
10Ѵ
.RB ( i ,
.BR d ,
.BR u )
ˤơؽϿСѤƽϤ롣
㤨С glibc 2.2.3 ʹߤǤϡڥ륷 (`fa_IR') 
ӥ (Arabic-Indic digits) ϤǤ롣
.\" եˤ outdigits Ȥɤ롣
.SS ե
ǾΥեꤹ 10ʿοʸ (ʸκǽʸ
ʳ)ܹܤϥץǤ롣
Ѵ줿ͤʸեĹ⾯ʤ硢
եɤκ¦򥹥ڡ
(·Υե饰ϱ¦)
10ʿʸ `*'  `*m$' (m  10) 񤯤ȤǤ롣
`*'  `*m$' Ϥ줾졢ΰ m ܤΰեȤ
ȤȤꤹ (ΰ
.I int
ǤʤФʤʤ)
եοꤵ줿ϡ
`\-' ե饰οΥեȤư롣
եä꤬ʤäꤷƤ⡢եɤڤͤ
ȤϤʤ⤷Ѵ̤ե⹭ä硢
եɤѴ̤˹롣
.SS 
ץǤ٤ϡԥꥪ (`\&.') Ȥ³10ʿȤ
ǻꤹ (10ʿϥץ) 
10ʿʸ `*'  `*m$' (m  10 )񤯤ȤǤ롣
`*'  `*m$' Ϥ줾졢ΰ m ܤΰ٤Ȥ
ȤȤꤹ (ΰ
.I int
ǤʤФʤʤ)
٤Ȥ `.' ꤵ줿ꡢ٤οä硢
٤ϥȤߤʤ롣
.BR d ,
.BR i ,
.BR o ,
.BR u ,
.BR x ,
.B X
ѴǤϡɽǾηꤹ롣
.BR a ,
.BR A ,
.BR e ,
.BR E ,
.BR f ,
.B F
ѴǤϡʲɽηꤹ롣
.B g

.B G
ѴǤϡͭκꤹ롣
.B s

.B S
ѴǤϡʸ󤫤Ϥʸꤹ롣
.SS Ĺ
``Ѵ''Ȥϡ
.BR d ,
.BR i ,
.BR o ,
.BR u ,
.BR x ,
.B X
ѴΤȤǤ롣
.TP
.B hh
Ѵб
.I signed char

.I unsigned char
ǡ
.B n
Ѵб
.I signed char
ؤΥݥ󥿤Ǥ뤳Ȥ򼨤
.TP
.B h
Ѵб
.I short int

.I unsigned short int
ǡ
.B n
Ѵб
.I short int
ؤΥݥ󥿤Ǥ뤳Ȥ򼨤
.TP
.BR l " ()"
Ѵб
ѴǤ
.IR "long int" 
.IR "unsigned long int" 
.B n
ѴǤ
.I long long int
ؤΥݥ󥿡
.B c
ѴǤ
.IR wint_t 
.B s
ѴǤ
.I wchar_t
ؤΥݥ󥿤Ǥ뤳Ȥ򼨤

.TP
.BR ll " (륨)"
Ѵб
.I long long int

.I unsigned long long int
ǡ
.B n
Ѵб
.I long int
ؤΥݥ󥿤Ǥ뤳Ȥ򼨤
.TP
.B L
.BR a ,
.BR A ,
.BR e ,
.BR E ,
.BR f ,
.BR F ,
.BR g ,
.B G
Ѵб
.I long double
Ǥ뤳Ȥ򼨤
(C99 Ǥ %LF ȤȤǧƤ뤬SUSv2 ǤǧƤʤ)
.TP
.B q
(`quad' 4.4BSD  Linux libc5 ΤͭȤäƤϤʤʤ)
.B ll
Ʊ̣Ǥ롣
.TP
.B j
Ѵб
.I intmax_t

.I uintmax_t
Ǥ뤳Ȥ򼨤
.TP
.B z
Ѵб
.I size_t

.I ssize_t
Ǥ뤳Ȥ򼨤
(Linux libc5 ǤϡꤹΤ
.B Z
Ѥ롣ȤäƤϤʤʤ)
.TP
.B t
Ѵб
.I ptrdiff_t
Ǥ뤳Ȥ򼨤
.PP
SUSv2 ĹҤȤƻѤǤΤϡ
.B h
.RB ( hd ,
.BR hi ,
.BR ho ,
.BR hx ,
.BR hX ,
.BR hn ),
.B l
.RB ( ld ,
.BR li ,
.BR lo ,
.BR lx ,
.BR lX ,
.BR ln ,
.BR lc ,
.BR ls ),
.B L
.RB ( Le ,
.BR LE ,
.BR Lf ,
.BR Lg ,
.BR LG )
Ǥ롣
.SS Ѵ
ŬѤѴηꤹʸ
.PP
ѴҤȤΰ̣ϰʲ̤Ǥ롣
.TP
.BR d , i
.I int
դ 10 ɽѴ롣
ٻ꤬С٤ǻꤷɬϤ롣Ѵͤ
ꤵ줿­ʤϡ¦ 0 롣
ǥեȤ٤ 1 Ǥ롣
0 ɽ褦ȤˡŪ٤Ȥ 0 ꤵƤȡ
Ϥ϶ʸȤʤ롣
.TP
.BR o , u , x , X
.I "unsigned int"

ʤ8ʿ
.RB ( o ),
ʤ10ʿ
.RB ( u ),
ʤ16ʿ
.RB ( x

.BR X )
Ѵ롣
.B x
ѴǤ
.B abcdef
Ѥ졢
.B X
ѴǤ
.B ABCDEF
Ѥ롣
ٻ꤬С٤ǻꤷɬϤ롣Ѵͤ
ꤵ줿­ʤϡ¦ 0 롣
.TP
.BR e , E
.I double
ݤ
.if \w'\*(Pm'=0 .ds Pm \(+-
.RB [\-]d \&. ddd e \\*(Pmdd
ηѴ롣
ˤϰοꡢʲη٤ǻꤵ줿
ˤʤ롣٤ϻꤵʤä 6 Ȥߤʤ롣
٤ 0 ξˤϡʲɽʤ
.B E
ѴǤϡؿɽȤ
.RB ( e
ǤϤʤ)
.B E
Ȥ롣
ؿʬϾʤȤ 2ɽ롣
Ĥޤꡢؿͤ 0 ξˤϡ00 ɽ롣
.TP
.BR f , F
.I double
ݤ
.RB [\-]ddd \&. ddd
η10ɽѴ롣
θηϡ٤ǻꤵ줿ͤȤʤ롣
٤ꤵƤʤˤ 6 Ȥư롣
٤ȤŪ 0 ꤵ줿Ȥˤϡʲɽʤ
ɽݤˤϡ˾ʤȤϿɽ롣

(SUSv2 Ǥϡ
.B F
ϵꤵƤ餺̵¤ NaN ˴ؤʸɽ
ԤäƤ褤ȤˤʤäƤ롣
 C99 ɸǤϡ
.B f
ѴǤϡ̵¤ `[\-]inf'  `[\-]infinity' ɽ
NaN ʸƬ `nan' Ĥɽ褦˵ꤵƤ롣
.B F
Ѵξ `[\-]INF', `[\-]INFINITY', `NAN*' ɽ롣)
.TP
.BR g , G
.I double

.B f

.B e
.RB ( G
Ѵξ
.B F

.BR E )
ηѴ롣
٤ɽꤹ롣
٤ꤵʤϡ6Ȥߤʤ롣
٤ 0 ξϡ1Ȥߤʤ롣
Ѵͤλؿ \-4 꾮ٰʾξˡ
.B e
Ѥ롣
Ѵ줿̤ξʬ 0 Ϻ롣ɽΤϡ
ʲ˿ʤȤĤˤǤ롣
.TP
.BR a , A
(C99 ˤϤ뤬 SUSv2 ˤϤʤ)
.B a
ѴǤϡ
.I double
 (abcdef ʸȤä)
.RB [\-] 0x h \&. hhhh p \\*(Pmd;
 16 ɽѴ롣
.B A
ѴǤϡʸ
.BR 0X ,
ʸ ABCDEF, ؿʸ
.B P
Ѥ롣
ˤ 116ʿ֤졢θη
٤ǻꤵ줿ͤȤʤ롣
ǥեȤ٤ϡͤ 2ʿΤɽǤˤϡ
ͤΤɽǤȤʤ롣ʳξϡ
.I double
̤ͤΤ˽ʬ礭Ȥʤ롣
.\" motoki 2005/03/19: äƤ뤫ʡ
οϡƤʤξϤĤˤʤ뤫ʬʤ
줿ξϡ 0 ʳͤˤʤ뤬Ĥˤʤ뤫ʬʤ
.TP
.B c
.B l
ҤʤС
.I int

.IR "unsigned char"
Ѵơη̤бʸϤ롣
.B l
ҤС
.I wint_t
(磻ʸ) 
.BR wcrtomb (3)
ؿեȾ֤ǸƤӽФƥޥХʸѴ
Ѵ줿ޥХʸϤ롣
.TP
.B s
.B l
Ҥʤ硢

.I "const char *"
ʸؤΥݥ (ʸؤΥݥ) Ǥ뤳Ȥ
ԤƤ롣ʸϡü NULL Х ('\\0')
ФƤޤǽϤ (üʸϽϤʤ)
٤ꤵƤȡꤵ줿ʾϽϤʤ
٤ꤵ줿ˤϡüХȤ¸ߤɬפϤʤ
٤ꤵƤʤäꡢ٤ͤ礭礭ˤϡ
Ͻü NULL ХȤޤǤʤФʤʤ

.B l
ҤꤵƤ硢

.I "const wchar_t *"
ǥ磻ʸؤΥݥ󥿤Ǥ뤳ȤԤƤ롣
Υ磻ʸ (1ʸ
.BR wcrtomb (3)
ƤӽФ) ޥХʸѴ
(ǽΥ磻ʸѴ
.BR wcrtomb ()
ΥեȾ֤֤ᤷƤѴϹԤ)
ޥХʸؤѴϡʸü NULL 磻ʸ
ФƤޤǹԤ졢ü NULL 磻ʸޤѴ롣
̤ΥޥХʸϡü NULL ХȤФƤޤ
Ϥ (ü NULL ХȤϽϤʤ)
٤ꤵ줿硢ꤵ줿ХȿʾˤϽϤʤ
âޥХʸΰʬϤ뤳ȤϤʤ
٤ϡ֥Хȡ׿ꤹΤǤꡢ֥磻ʸ׿
ֲ̤Ǥΰ֡פꤹΤǤϤʤȤա
٤ꤵƤơ˽Ϥã˽ϥХȿ
٤ͤĶϡ NULL 磻ʸǽüƤʤƤ褤
ʳξϡɬ NULL 磻ʸǽüƤʤФʤʤ
.TP
.B C
(C99 ˤϤʤ SUSv2 ˤϤ)
.B lc
ƱȤäƤϤʤʤ
.TP
.B S
(C99 ˤϤʤ SUSv2 ˤϤ)
.B ls
ƱȤäƤϤʤʤ
.TP
.B p
.I "void *"
ݥ󥿰
.RB ( %#x

.BR  %#lx
Τ褦) 16 ʿǽϤ롣
.TP
.B n
ޤǤ˽Ϥ줿ʸ
.I "int *"
(ޤη) Υݥ󥿰ؤ¸롣
ѴϹԤʤ
.TP
.B m
(glibc Ǥγĥ)
.I strerror(errno)
νϤɽ롣ɬפʤ
.TP
.B %
`%' ʸϤ롣Ѵ̵
ѴΤ񤯤 `%%' Ȥʤ롣
.SH 
.BR fprintf (),
.BR printf (),
.BR sprintf (),
.BR vprintf (),
.BR vfprintf (),
.BR vsprintf ()
ؿϡC89  C99 ˽򤷤Ƥ롣
.BR snprintf ()

.BR vsnprintf ()
 C99 ˽򤷤Ƥ롣
.PP
.BR snprintf ()
֤ͤ򸫤ȡ
SUSv2  C99 ɸϸߤ̷⤷Ƥ롣
SUSv2 Ǥϡ
.BR snprintf ()

.IR size =0
ǸƤӽФ줿硢 1 ̤ͤ򲿤֤ͤȤ褦˵ꤷƤ롣
 C99 ǤϡΤ褦ʾ
.I str
 NULL Ȥ֤ͤȤ (̤̾) ϥХåեʬ礭
ä˽ϤǤʸ֤
.PP
Linux libc4 Ǥϡ 5 Ĥ C ɸΥե饰
Ĺ h, l, L Ѵ cdeEfFgGinopsuxX Ȥ롣
â F  f ƱǤ롣
ޤ D, O, U  ld, lo, lu ƱΤȤƻȤ
(Ϥޤͤǡ  %D бǤڤ줿˿ʥХ
)¸ξ1000 ڤꡢ NaN ̵¡
%m$  *m$ ϻȤʤ
.PP
Linux libc5 Ǥϡ 5 Ĥ C ɸΥե饰 ' ե饰롢
%m$  *m$ Ȥ롣
ޤĹ h, l, L, Z, q Ȥ뤬 L  q ξȤ
\fIlong double\fP  \fIlong long int\fP бƤ (ϥХǤ)
ߤǤ FDOU ѴǧʤѴʸ
.B m
ɲä줿
.I strerror(errno)
ϤΤǤ롣
.PP
glibc 2.0 ǤϡѴʸ C  S ɲä줿
.PP
glibc 2.1 ǤϡĹ hh, j, t, z Ѵʸ a, A ɲä줿
.PP
glibc 2.2 Ǥϡ C99 ǵꤵ줿̣ǤѴʸ F 
ե饰ʸ I ɲä줿
.SH 
glibc 
.BR snprintf ()

.BR vsnprintf ()
μϡС 2.1 ʹߤ C99 ɸ˽򤷤Ƥꡢ
嵭̤ư򤹤롣
glibc 2.0.6 ޤǤϡϤڤͤ줿 \-1 ֤
.\" .SH 
.\" Unix V7 Ǥ
.\" .BR printf (),
.\" .BR fprintf (),
.\" .BR sprintf ()
.\"  3 Ĥδؿȡե饰 \-٤Ǥ *Ĺ l
.\" Ѵ doxfegcsu ld,ld,lu,lx ƱȤ D,O,U,X Ƥ롣
.\" 2.9.1BSD Ǥ⤳Ʊä 2.10BSD Ǥ
.\" ե饰 #, +, ɲä졢 D,O,U,X ˤĤƤϵܤʤʤä
.\" 2.11BSD Ǥ
.\" .BR vprintf (),
.\" .BR vfprintf (),
.\" .BR vsprintf ()
.\" ɲä졢 D,O,U,X Ȥʤ褦˷ٹ𤵤줿
.\" 4.3BSD Reno Ǥϥե饰 0Ĺ h  L
.\" Ѵ n, p, E, G, (ߤΰ̣Ǥ) X ɲä졢
.\" D,O,U 侩Ȥʤä
.\" 4.4BSD Ǥϡؿ
.\" .BR snprintf ()
.\" .BR vsnprintf ()
.\" Ĺ q Ƴ줿
.\" FreeBSD Ǥϡ
.\" .BR sprintf ()
.\" Τ˽ʬʥХåեݤ
.\" .BR asprintf ()
.\" 
.\" .BR vasprintf ()
.\" ɲäƤ롣
.\" glibc ˤϡؿ
.\" .BR dprintf (),
.\" .BR vdprintf ()
.\" ꡢϥȥ꡼ǤϤʤեǥץ˽Ϥ롣
.SH Х
.BR sprintf ()

.BR vsprintf ()
Ͼ˽ʬĹʸΰ褬ȲꤹΤǡƤӽФ¦
ºݤΰ褫餢դʤ褦դʤФʤʤ
ݾڤ뤳ȤԲǽʾ礬¿
ʸĹϥ¸Ǥꡢͽ¬񤷤Ȥա

.BR snprintf ()

.BR vsnprintf ()
(ޤ
.BR asprintf (3)

.BR vasprintf (3))
Ȥȡ
.PP
Linux libc4.[45] ˤ
.BR snprintf ()
Ϥʤ libbsd 󶡤Ƥꡢ
ˤ
.BR sprintf ()
 (Ĥޤ
.I size
̵뤹)
.BR snprintf ()
롣
äơ libc4 
.BR snprintf ()
ȤȡʥƥȤ롣
.PP
.BI printf( foo );
Τ褦ʥɤϤФХХ
ʤʤ
.I foo
 % ʸޤޤƤ뤫⤷ʤǤ롣
.I foo
Ǥʤ桼ϤƤˤϡ
 %n ޤޤƤ뤳Ȥꡢ
.BR printf ()
ƤӽФ˥ؤν񤭹ߤꡢ
ƥۡ뤳Ȥˤʤ뤫⤷ʤ
.\".PP
.\".\"O Some floating point conversions under early libc4
.\".\"O caused memory leaks.
.\" libc4 Ǥμ¿Ѵˤϥ꡼Ȥ롣
.SH 
.if \w'\*(Pi'=0 .ds Pi pi
\*(Pi  5 ǽϤ롣
.in +4n
.nf

#include <math.h>
#include <stdio.h>
fprintf(stdout, "pi = %.5f\en", 4 * atan(1.0));
.fi
.in
.PP
դȻ֤ `Sunday, July 3, 10:02' ηǽϤ롣
.RI ( weekday

.I month
ʸؤΥݥ󥿤Ǥ)
.in +4n
.nf

#include <stdio.h>
fprintf(stdout, "%s, %s %d, %.2d:%.2d\en",
	weekday, month, day, hour, min);
.fi
.in
.PP
 -  - ǯ νɽԤ¿
äơǤǤϽ񼰤ǻꤵ줿֤
ɽǤʤФʤʤ
.in +4n
.nf

#include <stdio.h>
fprintf(stdout, format,
	weekday, month, day, hour, min);

.fi
.in
.I format
ϥ˰¸Ƥꡢν֤Ѥ뤳ȤǤ롣
.I format

.in +4n
.nf

"%1$s, %3$d. %2$s, %4$d:%5$.2d\en"

.fi
.in
ǤС `Sonntag, 3. Juli, 10:02' Ȥ̤ˤʤ롣
.PP
ʬ礭ʸΰݤơ˥åǼˤ
(glibc 2.0  glibc 2.1 ξư륳):
.nf

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
char *
make_message(const char *fmt, ...)
{
    /* Guess we need no more than 100 bytes. */
    int n, size = 100;
    char *p, *np;
    va_list ap;

    if ((p = malloc(size)) == NULL)
        return NULL;

    while (1) {
        /* Try to print in the allocated space. */
        va_start(ap, fmt);
        n = vsnprintf(p, size, fmt, ap);
        va_end(ap);
        /* If that worked, return the string. */
        if (n > \-1 && n < size)
            return p;
        /* Else try again with more space. */
        if (n > \-1)    /* glibc 2.1 */
            size = n+1; /* precisely what is needed */
        else           /* glibc 2.0 */
            size *= 2;  /* twice the old size */
        if ((np = realloc (p, size)) == NULL) {
            free(p);
            return NULL;
        } else {
            p = np;
        }
    }
}
.fi
.SH Ϣ
.BR printf (1),
.BR asprintf (3),
.BR dprintf (3),
.BR scanf (3),
.BR setlocale (3),
.BR wcrtomb (3),
.BR wprintf (3),
.BR locale (5)