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printf(3C)		 Standard C Library Functions		    printf(3C)

NAME
       printf, fprintf, sprintf, snprintf, asprintf - print formatted output

SYNOPSIS
       #include <stdio.h>

       int printf(const char *restrict format,
	    /* args*/ ...);

       int fprintf(FILE *restrict stream, const char *restrict format,
	    /* args*/ ...);

       int sprintf(char *restrict s, const char *restrict format,
	    /* args*/ ...);

       int snprintf(char *restrict s, size_t n,
	    const char *restrict format, /* args*/ ...);

       int asprintf(char ** ret, const char *restrict format,
	    /* args*/ ...);

DESCRIPTION
       The  printf() function places output on the standard output stream std‐
       out.

       The fprintf() function places output on	on  the	 named	output	stream
       stream.

       The  sprintf()  function places output, followed by the null byte (\0),
       in consecutive bytes starting at s; it is the user's responsibility  to
       ensure that enough storage is available.

       The  snprintf() function is identical to sprintf() with the addition of
       the argument n, which specifies the size of the buffer referred	to  by
       s.  If  n  is 0, nothing is written and s can be a null pointer. Other‐
       wise, output bytes beyond the n-1st  are	 discarded  instead  of	 being
       written to the array and a null byte is written at the end of the bytes
       actually written into the array.

       The asprintf() function is the same as the  sprintf()  function	except
       that  it	 returns,  in  the  ret argument, a pointer to a buffer suffi‐
       ciently large to hold the output string. This pointer should be	passed
       to  free(3C)  to	 release  the  allocated  storage when it is no longer
       needed. If sufficient space cannot be allocated, the  asprintf()	 func‐
       tion returns -1 and sets ret to be a NULL pointer.

       Each  of	 these	functions  converts, formats, and prints its arguments
       under control of the format. The format is a character  string,	begin‐
       ning  and ending in its initial shift state, if any. The format is com‐
       posed of zero or more directives: ordinary characters, which are simply
       copied  to  the	output	stream	and conversion specifications, each of
       which results in the fetching of zero or more  arguments.  The  results
       are  undefined  if  there are insufficient arguments for the format. If
       the format is exhausted while arguments remain,	the  excess  arguments
       are evaluated but are otherwise ignored.

       Conversions  can be applied to the nth argument after the format in the
       argument list, rather than to the next unused argument. In  this	 case,
       the conversion specifier % (see below) is replaced by the sequence %n$,
       where n is a decimal integer in the range [1,  NL_ARGMAX],  giving  the
       position	 of  the  argument in the argument list. This feature provides
       for the definition of format strings that select arguments in an	 order
       appropriate to specific languages (see the EXAMPLES section).

       In format strings containing the %n$ form of conversion specifications,
       numbered arguments in the argument list can be referenced from the for‐
       mat string as many times as required.

       In  format  strings containing the % form of conversion specifications,
       each argument in the argument list is used exactly once.

       All forms of the printf() functions allow for the insertion of  a  lan‐
       guage-dependent radix character in the output string. The radix charac‐
       ter is defined by the program's locale (category	 LC_NUMERIC).  In  the
       POSIX  locale, or in a locale where the radix character is not defined,
       the radix character defaults to a period (.).

   Conversion Specifications
       Each conversion specification is introduced by the %  character	or  by
       the  character  sequence	 %n$,  after  which  the  following  appear in
       sequence:

	   o	  An optional field, consisting of a decimal digit string fol‐
		  lowed	 by a $, specifying the next argument to be converted.
		  If this field is not provided, the args following  the  last
		  argument converted will be used.

	   o	  Zero	or more flags (in any order), which modify the meaning
		  of the conversion specification.

	   o	  An optional minimum field width. If the converted value  has
		  fewer	 bytes	than  the  field width, it will be padded with
		  spaces by default on the left; it  will  be  padded  on  the
		  right,  if the left-adjustment flag (‐), described below, is
		  given to the field width. The field width takes the form  of
		  an asterisk (*), described below, or a decimal integer.

		  If  the  conversion  specifier  is  s, a standard-conforming
		  application (see standards(5)) interprets the field width as
		  the  minimum	number	of bytes to be printed; an application
		  that is not standard-conforming interprets the  field	 width
		  as  the  minimum number of columns of screen display. For an
		  application that is not standard-conforming, %10s  means  if
		  the  converted value has a screen width of 7 columns, 3 spa‐
		  ces would be padded on the right.

		  If the format is %ws, then the field width should be	inter‐
		  preted as the minimum number of columns of screen display.

	   o	  An  optional precision that gives the minimum number of dig‐
		  its to appear for the d, i, o, u, x, and X conversions  (the
		  field is padded with leading zeros); the number of digits to
		  appear after the radix character for the a, A, e, E, f,  and
		  F  conversions, the maximum number of significant digits for
		  the g and G conversions; or the maximum number of  bytes  to
		  be  printed from a string in s and S conversions. The preci‐
		  sion takes the form of a period (.) followed	either	by  an
		  asterisk  (*), described below, or an optional decimal digit
		  string, where a null digit string is treated as 0. If a pre‐
		  cision  appears  with	 any  other  conversion specifier, the
		  behavior is undefined.

		  If the conversion specifier is s or S, a standard-conforming
		  application  (see  standards(5)) interprets the precision as
		  the maximum number of bytes to be  written;  an  application
		  that	is not standard-conforming interprets the precision as
		  the maximum number of columns	 of  screen  display.  For  an
		  application  that  is	 not  standard-conforming,  %.5s would
		  print only the portion of the string that would display in 5
		  screen columns. Only complete characters are written.

		  For  %ws, the precision should be interpreted as the maximum
		  number of columns of screen display. The precision takes the
		  form	of  a period (.) followed by a decimal digit string; a
		  null digit string is treated as zero. Padding	 specified  by
		  the  precision  overrides the padding specified by the field
		  width.

	   o	  An optional length modifier that specified the size  of  the
		  argument.

	   o	  A conversion specifier that indicates the type of conversion
		  to be applied.

       A field width, or precision, or both can be indicated  by  an  asterisk
       (*) . In this case, an argument of type int supplies the field width or
       precision. Arguments specifying field width, or precision, or both must
       appear  in  that	 order before the argument, if any, to be converted. A
       negative field width is taken as a − flag followed by a positive	 field
       width.  A negative precision is taken as if the precision were omitted.
       In format strings containing the %n$ form of  a	conversion  specifica‐
       tion,  a field width or precision may be indicated by the sequence *m$,
       where m is a decimal integer in the range  [1,  NL_ARGMAX]  giving  the
       position in the argument list (after the format argument) of an integer
       argument containing the field width or precision, for example:

	 printf("%1$d:%2$.*3$d:%4$.*3$d\n", hour, min, precision, sec);

       The format can contain either numbered  argument	 specifications	 (that
       is, %n$ and *m$), or unnumbered argument specifications (that is, % and
       *), but normally not both. The only exception to this is that %% can be
       mixed  with the %n$ form. The results of mixing numbered and unnumbered
       argument specifications in a format string are undefined. When numbered
       argument	 specifications are used, specifying the Nth argument requires
       that all the leading arguments, from the	 first	to  the	 (N-1)th,  are
       specified in the format string.

   Flag Characters
       The flag characters and their meanings are:

       '	The integer portion of the result of a decimal conversion (%i,
		%d, %u, %f, %F, %g, or %G) will be formatted  with  thousands'
		grouping  characters.  For  other  conversions the behavior is
		undefined. The non-monetary grouping character is used.

       −	The result of the conversion will be left-justified within the
		field.	The conversion will be right-justified if this flag is
		not specified.

       +	The result of a signed conversion will	always	begin  with  a
		sign (+ or -). The conversion will begin with a sign only when
		a negative value is converted if this flag is not specified.

       space	If the first character of a signed conversion is not a sign or
		if  a signed conversion results in no characters, a space will
		be placed before the result. This means that if the space  and
		+ flags both appear, the space flag will be ignored.

       #	The  value  is to be converted to an alternate form. For c, d,
		i, s, and u conversions, the flag has no effect. For an o con‐
		version,  it  increases	 the precision (if necessary) to force
		the first digit of the result to be a zero. For x or X conver‐
		sion,  a non-zero result will have 0x (or 0X) prepended to it.
		For a, A, e, E, f, F, g, and G conversions,  the  result  will
		always contain a radix character, even if no digits follow the
		radix  character.  Without  this  flag,	 the  radix  character
		appears	 in  the  result  of these conversions only if a digit
		follows it. For g and G conversions, trailing zeros  will  not
		be removed from the result as they normally are.

       0	For  d, i, o, u, x, X, a, A, e, E, f, F, g, and G conversions,
		leading zeros (following any indication of sign or  base)  are
		used to pad to the field width; no space padding is performed.
		If the 0 and − flags both appear, the 0 flag will be  ignored.
		For d, i, o, u, x, and X conversions, if a precision is speci‐
		fied, the 0 flag will be ignored. If the 0 and	'  flags  both
		appear,	 the grouping characters are inserted before zero pad‐
		ding. For other conversions, the behavior is undefined.

   Length Modifiers
       The length modifiers and their meanings are:

       hh	       Specifies that a following d, i, o, u, x, or X  conver‐
		       sion  specifier	applies	 to  a signed char or unsigned
		       char argument (the argument  will  have	been  promoted
		       according to the integer promotions, but its value will
		       be converted to signed char  or	unsigned  char	before
		       printing);  or  that a following n conversion specifier
		       applies to a pointer to a signed char argument.

       h	       Specifies that a following d, i, o, u, x, or X  conver‐
		       sion  specifier	applies	 to  a short or unsigned short
		       argument (the argument will have been promoted  accord‐
		       ing  to	the  integer promotions, but its value will be
		       converted to short or unsigned short before  printing);
		       or that a following n conversion specifier applies to a
		       pointer to a short argument.

       l (ell)	       Specifies that a following d, i, o, u, x, or X  conver‐
		       sion specifier applies to a long or unsigned long argu‐
		       ment; that a following n conversion  specifier  applies
		       to  a  pointer  to  a long argument; that a following c
		       conversion specifier applies to a wint_t argument; that
		       a following s conversion specifier applies to a pointer
		       to a wchar_t argument; or has no effect on a  following
		       a, A, e, E, f, F, g, or G conversion specifier.

       ll (ell-ell)    Specifies  that a following d, i, o, u, x, or X conver‐
		       sion specifier applies to a long long or unsigned  long
		       long  argument; or that a following n conversion speci‐
		       fier applies to a pointer to a long long argument.

       j	       Specifies that a following d, i, o, u, x, or X  conver‐
		       sion  specifier	applies	 to  an	 intmax_t or uintmax_t
		       argument; or that a following  n	 conversion  specifier
		       applies	to  a  pointer	to  an	intmax_t argument. See
		       NOTES.

       z	       Specifies that a following d, i, o, u, x, or X  conver‐
		       sion specifier applies to a size_t or the corresponding
		       signed integer type argument; or	 that  a  following  n
		       conversion  specifier  applies to a pointer to a signed
		       integer type corresponding to size_t argument.

       t	       Specifies that a following d, i, o, u, x, or X  conver‐
		       sion  specifier	applies	 to  a ptrdiff_t or the corre‐
		       sponding unsigned type argument; or that a following  n
		       conversion   specifier	applies	 to  a	pointer	 to  a
		       ptrdiff_t argument.

       L	       Specifies that a following a, A, e, E, f, F,  g,	 or  G
		       conversion specifier applies to a long double argument.

       If  a  length modifier appears with any conversion specifier other than
       as specified above, the behavior is undefined.

   Conversion Specifiers
       Each conversion specifier results in fetching zero or  more  arguments.
       The  results  are undefined if there are insufficient arguments for the
       format. If the format is exhausted while arguments remain,  the	excess
       arguments are ignored.

       The conversion specifiers and their meanings are:

       d, i    The  int argument is converted to a signed decimal in the style
	       [−]dddd. The precision specifies the minimum number  of	digits
	       to  appear;  if the value being converted can be represented in
	       fewer digits, it will  be  expanded  with  leading  zeros.  The
	       default	precision  is  1.  The	result of converting 0 with an
	       explicit precision of 0 is no characters.

       o       The unsigned int argument is converted to unsigned octal format
	       in  the	style dddd. The precision specifies the minimum number
	       of digits to appear; if the value being converted can be repre‐
	       sented in fewer digits, it will be expanded with leading zeros.
	       The default precision is 1. The result of converting 0 with  an
	       explicit precision of 0 is no characters.

       u       The unsigned int argument is converted to unsigned decimal for‐
	       mat in the style dddd. The precision specifies the minimum num‐
	       ber  of	digits	to appear; if the value being converted can be
	       represented in fewer digits, it will be expanded	 with  leading
	       zeros.  The  default precision is 1. The result of converting 0
	       with an explicit precision of 0 is no characters.

       x       The unsigned int argument is converted to unsigned  hexadecimal
	       format in the style dddd; the letters abcdef are used. The pre‐
	       cision specifies the minimum number of digits to appear; if the
	       value  being  converted	can be represented in fewer digits, it
	       will be expanded with leading zeros. The default	 precision  is
	       1.  The	result of converting 0 with an explicit precision of 0
	       is no characters.

       X       Behaves the same as the x conversion specifier except that let‐
	       ters ABCDEF are used instead of abcdef.

       f, F    The  double  argument  is  converted to decimal notation in the
	       style [−]ddd.ddd, where the number of digits  after  the	 radix
	       character  (see setlocale(3C)) is equal to the precision speci‐
	       fication. If the precision is missing it is taken as 6; if  the
	       precision  is  explicitly 0 and the # flag is not specified, no
	       radix character appears. If a radix character appears, at least
	       1  digit	 appears  before it. The converted value is rounded to
	       fit the specified output format	according  to  the  prevailing
	       floating	 point	rounding  direction mode. If the conversion is
	       not exact, an inexact exception is raised.

	       For the f specifier, a double argument representing an infinity
	       or NaN is converted in the style of the e conversion specifier,
	       except that for an infinite argument, "infinity" or  "Infinity"
	       is  printed when the precision is at least 8 and "inf" or "Inf"
	       is printed otherwise.

	       For the F specifier, a double argument representing an infinity
	       or  NaN	is  converted  in  the SUSv3 style of the E conversion
	       specifier, except that for an infinite argument, "INFINITY"  is
	       printed	when  the  precision  is  at  least  8 and or "INF" is
	       printed otherwise.

       e, E    The double argument is converted	 to  the  style	 [−]d.ddde±dd,
	       where  there  is one digit before the radix character (which is
	       non-zero if the argument is non-zero) and the number of	digits
	       after it is equal to the precision. When the precision is miss‐
	       ing it is taken as 6; if the precision is 0 and the #  flag  is
	       not  specified,	no  radix  character appears. The E conversion
	       specifier will produce a number with E instead of e introducing
	       the exponent. The exponent always contains at least two digits.
	       The converted value is rounded to fit the specified output for‐
	       mat  according to the prevailing floating point rounding direc‐
	       tion mode. If the conversion is not exact, an inexact exception
	       is raised.

	       Infinity	 and  NaN  values  are handled in one of the following
	       ways:

	       SUSv3	  For the e specifier, a double argument  representing
			  an  infinity	is  printed as "[−]infinity", when the
			  precision for the conversion is at least  7  and  as
			  "[−]inf" otherwise. A double argument representing a
			  NaN is printed as "[−]nan".  For  the	 E  specifier,
			  "INF",  "INFINITY", and "NAN" are printed instead of
			  "inf", "infinity", and "nan", respectively. Printing
			  of the sign follows the rules described above.

	       Default	  A   double  argument	representing  an  infinity  is
			  printed as "[−]Infinity", when the precision for the
			  conversion  is at least 7 and as "[−]Inf" otherwise.
			  A double argument representing a NaN is  printed  as
			  "[−]NaN".  Printing  of  the	sign follows the rules
			  described above.

       g, G    The double argument is printed in style f or e (or in  style  E
	       in  the	case  of a G conversion specifier), with the precision
	       specifying the number of significant  digits.  If  an  explicit
	       precision is 0, it is taken as 1. The style used depends on the
	       value converted: style e (or E) will be used only if the	 expo‐
	       nent  resulting	from the conversion is less than -4 or greater
	       than or equal to the precision. Trailing zeros are removed from
	       the  fractional	part  of the result. A radix character appears
	       only if it is followed by a digit.

	       A double argument representing an infinity or NaN is  converted
	       in  the	style  of the e or E conversion specifier, except that
	       for an infinite argument, "infinity", "INFINITY", or "Infinity"
	       is  printed  when the precision is at least 8 and "inf", "INF",
	       or "Inf" is printed otherwise.

       a, A    A double argument representing a floating-point number is  con‐
	       verted in the style "[-]0xh.hhhhp±d", where the single hexadec‐
	       imal digit preceding the radix point is 0  if  the  value  con‐
	       verted  is  zero	 and 1 otherwise and the number of hexadecimal
	       digits after it is equal to the precision; if the precision  is
	       missing,	 the number of digits printed after the radix point is
	       13 for the conversion of a double value, 16 for the  conversion
	       of  a  long double value on x86, and 28 for the conversion of a
	       long double value on SPARC; if the precision is	zero  and  the
	       '#'  flag  is  not  specified,  no decimal-point character will
	       appear. The letters "abcdef" are used for a conversion and  the
	       letters	"ABCDEF"  for A conversion. The A conversion specifier
	       produces a number with 'X' and 'P' instead of 'x' and 'p'.  The
	       exponent	 will  always  contain at least one digit, and only as
	       many more digits as necessary to represent the decimal exponent
	       of 2. If the value is zero, the exponent is zero.

	       The converted value is rounded to fit the specified output for‐
	       mat according to the prevailing floating point rounding	direc‐
	       tion mode. If the conversion is not exact, an inexact exception
	       is raised.

	       A double argument representing an infinity or NaN is  converted
	       in the SUSv3 style of an e or E conversion specifier.

       c       The  int	 argument  is  converted  to an unsigned char, and the
	       resulting byte is printed.

	       If an l (ell) qualifier is present, the wint_t argument is con‐
	       verted  as  if by an ls conversion specification with no preci‐
	       sion and an argument that points to a two-element array of type
	       wchar_t,	 the  first element of which contains the wint_t argu‐
	       ment to the ls conversion specification and the second  element
	       contains a null wide-character.

       C       Same as lc.

       wc      The  int	 argument  is converted to a wide character (wchar_t),
	       and the resulting wide character is printed.

       s       The argument must be a pointer to an array of char. Bytes  from
	       the array are written up to (but not including) any terminating
	       null byte. If a precision is specified,	a  standard-conforming
	       application  (see  standards(5))	 will write only the number of
	       bytes specified by precision; an application that is not	 stan‐
	       dard-conforming	will write only the portion of the string that
	       will display in the number of columns of screen display	speci‐
	       fied  by	 precision.  If	 the precision is not specified, it is
	       taken to be infinite, so all bytes up to the  first  null  byte
	       are printed. An argument with a null value will yield undefined
	       results.

	       If an l (ell) qualifier is present,  the	 argument  must	 be  a
	       pointer	to  an array of type wchar_t. Wide-characters from the
	       array are converted to characters (each as if by a call to  the
	       wcrtomb(3C) function, with the conversion state described by an
	       mbstate_t object initialized to zero  before  the  first	 wide-
	       character  is converted) up to and including a terminating null
	       wide-character. The resulting characters are written up to (but
	       not  including)	the  terminating  null character (byte). If no
	       precision is specified, the array must  contain	a  null	 wide-
	       character.  If a precision is specified, no more than that many
	       characters (bytes) are written (including shift	sequences,  if
	       any),  and  the array must contain a null wide-character if, to
	       equal the character sequence length given by the precision, the
	       function would need to access a wide-character one past the end
	       of the array. In no case is a partial character written.

       S       Same as ls.

       ws      The argument must be a pointer to an array  of  wchar_t.	 Bytes
	       from the array are written up to (but not including) any termi‐
	       nating null character. If the precision is specified, only that
	       portion	of  the	 wide-character array that will display in the
	       number of columns of screen display specified by precision will
	       be  written.  If the precision is not specified, it is taken to
	       be infinite, so all wide characters up to the first null	 char‐
	       acter  are  printed.  An	 argument with a null value will yield
	       undefined results.

       p       The argument must be a  pointer	to  void.  The	value  of  the
	       pointer is converted to a set of sequences of printable charac‐
	       ters, which should be the same as the set of sequences that are
	       matched by the %p conversion of the scanf(3C) function.

       n       The  argument  must  be	a  pointer to an integer into which is
	       written the number of bytes written to the output standard  I/O
	       stream so far by this call to one of the printf() functions. No
	       argument is converted.

       %       Print a %; no argument  is  converted.  The  entire  conversion
	       specification must be %%.

       If  a  conversion  specification does not match one of the above forms,
       the behavior is undefined.

       In no case does a non-existent or small field width cause truncation of
       a  field;  if the result of a conversion is wider than the field width,
       the field is simply expanded to contain the conversion result.  Charac‐
       ters generated by printf() and fprintf() are printed as if the putc(3C)
       function had been called.

       The st_ctime and st_mtime fields of the file will be marked for	update
       between the call to a successful execution of printf() or fprintf() and
       the next successful completion of a call to fflush(3C) or fclose(3C) on
       the same stream or a call to exit(3C) or abort(3C).

RETURN VALUES
       The printf(), fprintf(), sprintf(), and asprintf() functions return the
       number of bytes transmitted (excluding the terminating null byte in the
       case of sprintf() and asprintf()).

       The  snprintf()	function  returns  the number of bytes that would have
       been written to s if n had been sufficiently large (excluding the  ter‐
       minating	 null byte.) If the value of n is 0 on a call to snprintf(), s
       can be a null pointer and the number of	bytes  that  would  have  been
       written	if  n  had  been sufficiently large (excluding the terminating
       null byte) is returned.

       Each function returns a negative value if an output error  was  encoun‐
       tered.

ERRORS
       For the conditions under which printf() and fprintf() will fail and may
       fail, refer to fputc(3C) or fputwc(3C).

       The snprintf() function will fail if:

       EOVERFLOW    The value of n is greater than INT_MAX or  the  number  of
		    bytes  needed to hold the output excluding the terminating
		    null is greater than INT_MAX.

       The printf(), fprintf(), sprintf(), and snprintf() functions  may  fail
       if:

       EILSEQ	 A  wide-character  code  that	does not correspond to a valid
		 character has been detected.

       EINVAL	 There are insufficient arguments.

       The printf(), fprintf(), and asprintf() functions may fail  due	to  an
       underlying malloc(3C) failure if:

       EAGAIN	 Storage space is temporarily unavailable.

       ENOMEM	 Insufficient storage space is available.

USAGE
       If  the	application  calling the printf() functions has any objects of
       type wint_t or wchar_t, it must also include the	 header	 <wchar.h>  to
       have these objects defined.

   Escape Character Sequences
       It  is  common  to  use the following escape sequences built into the C
       language when entering format strings for the printf()  functions,  but
       these  sequences	 are  processed by the C compiler, not by the printf()
       function.

       \a     Alert. Ring the bell.

       \b     Backspace. Move the printing position to	one  character	before
	      the  current  position, unless the current position is the start
	      of a line.

       \f     Form feed. Move the printing position to	the  initial  printing
	      position of the next logical page.

       \n     Newline.	Move  the  printing  position to the start of the next
	      line.

       \r     Carriage return. Move the printing position to the start of  the
	      current line.

       \t     Horizontal tab. Move the printing position to the next implemen‐
	      tation-defined horizontal tab position on the current line.

       \v     Vertical tab. Move the printing position to  the	start  of  the
	      next implementation-defined vertical tab position.

       In addition, the C language supports character sequences of the form

       \octal-number

       and

       \hex-number

       which  translates  into the character represented by the octal or hexa‐
       decimal number. For example, if ASCII representations are  being	 used,
       the  letter 'a' may be written as '\141' and 'Z' as '\132'. This syntax
       is most frequently used to represent the null character as  '\0'.  This
       is  exactly  equivalent to the numeric constant zero (0). Note that the
       octal number does not include the zero prefix as it would for a	normal
       octal  constant. To specify a hexadecimal number, omit the zero so that
       the prefix is an 'x' (uppercase 'X' is not allowed  in  this  context).
       Support	for  hexadecimal  sequences  is	 an  ANSI extension. See stan‐
       dards(5).

EXAMPLES
       Example 1 To print the language-independent date and time  format,  the
       following statement could be used:

	 printf (format, weekday, month, day, hour, min);

       For American usage, format could be a pointer to the string:

	 "%s, %s %d, %d:%.2d\n"

       producing the message:

	 Sunday, July 3, 10:02

       whereas for German usage, format could be a pointer to the string:

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

       producing the message:

	 Sonntag, 3. Juli, 10:02

       Example	2  To print a date and time in the form Sunday, July 3, 10:02,
       where weekday and month are pointers to null-terminated strings:

	 printf("%s, %s %i, %d:%.2d", weekday, month, day, hour, min);

       Example 3 To print pi to 5 decimal places:

	 printf("pi = %.5f", 4 * atan(1.0));

   Default
       Example 4 The following example applies only to applications  that  are
       not  standard-conforming. To print a list of names in columns which are
       20 characters wide:

	 printf("%20s%20s%20s", lastname, firstname, middlename);

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │ATTRIBUTE TYPE		     │ATTRIBUTE VALUE		   │
       ├─────────────────────────────┼─────────────────────────────┤
       │CSI			     │Enabled			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Committed			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │MT-Level		     │See below.		   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Standard		     │See below.		   │
       └─────────────────────────────┴─────────────────────────────┘

       All of these functions can be used  safely  in  multithreaded  applica‐
       tions,  as  long	 as  setlocale(3C)  is	not being called to change the
       locale. The sprintf() and snprintf() functions are Async-Signal-Safe.

       See standards(5) for the standards conformance of printf(),  fprintf(),
       sprintf(),  and	snprintf().  The asprintf() function is modeled on the
       one that appears in the FreeBSD, NetBSD, and GNU C libraries.

SEE ALSO
       exit(2), lseek(2), write(2), abort(3C), ecvt(3C), exit(3C), fclose(3C),
       fflush(3C), fputwc(3C), free(3C), malloc(3C), putc(3C), scanf(3C), set‐
       locale(3C),   stdio(3C),	  vprintf(3C),	  wcstombs(3C),	   wctomb(3C),
       attributes(5), environ(5), standards(5)

NOTES
       If  the	j  length modifier is used, 32-bit applications that were com‐
       piled using c89 on releases prior to Solaris 10 will  experience	 unde‐
       fined behavior.

       The  snprintf()	return	value when n = 0 was changed in the Solaris 10
       release. The change was based on the SUSv3 specification. The  previous
       behavior was based on the initial SUSv2 specification, where snprintf()
       when n = 0 returns an unspecified value less than 1.

SunOS 5.10			  7 Jan 2009			    printf(3C)
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