# Formatted numeric output

Formatted numeric output
You are encouraged to solve this task according to the task description, using any language you may know.

Express a number in decimal as a fixed-length string with leading zeros.

For example, the number   7.125   could be expressed as   00007.125.

## 8th

7.125 "%09.3f" s:strfmt
. cr

Output:
00007.125

procedure Zero_Fill is
Pic_String: String := "<999999.99>";
Pic : Picture := To_Picture(Pic_String);
type Money is delta 0.01 digits 8;
package Money_Output is new Decimal_Output(Money);
use Money_Output;

Value : Money := 37.25;
begin
Put(Item => Value, Pic => Pic);
end Zero_Fill;
Output:
000037.25

## ALGOL 68

Translation of: C
Works with: ALGOL 68 version Revision 1 - no extensions to language used
Works with: ALGOL 68G version Any - tested with release 1.18.0-9h.tiny
main:(
REAL r=exp(pi)-pi;
print((r,newline));
printf((\$g(-16,4)l\$,-r));
printf((\$g(-16,4)l\$,r));
printf((\$g( 16,4)l\$,r));
printf((\$g( 16,4,1)l\$,r));
printf((\$-dddd.ddddl\$,-r));
printf((\$-dddd.ddddl\$,r));
printf((\$+dddd.ddddl\$,r));
printf((\$ddddd.ddddl\$,r));
printf((\$zzzzd.ddddl\$,r));
printf((\$zzzz-d.ddddl\$,r));
printf((\$zzzz-d.ddddedl\$,r));
printf((\$zzzz-d.ddddeddl\$,r));
printf((\$4z-d.4de4dl\$,r))
)
Output:
+1.99990999791895e  +1
-19.9991
19.9991
+19.9991
+19999099.979e-6
-0019.9991
0019.9991
+0019.9991
00019.9991
00019.9991
19.9991
1.9999e1
1.9999e01
1.9999e0001

## AmigaE

The function RealF can be used to convert a floating point value into a string, with a specified number of decimal digits. But to fit the string into a greater container prepending 0 we must write our own function. (The one here proposed has no a flag for the alignment of the result inside the containing string)

PROC newRealF(es, fl, digit, len=0, zeros=TRUE)
DEF s, t, i
IF (len = 0) OR (len < (digit+3))
RETURN RealF(es, fl, digit)
ELSE
s := String(len)
t := RealF(es, fl, digit)
FOR i := 0 TO len-EstrLen(t)-1 DO StrAdd(s, IF zeros THEN '0' ELSE ' ')
StrCopy(es, s)
ENDIF
ENDPROC es

PROC main()
DEF s[100] : STRING
WriteF('\s\n', newRealF(s, 7.125, 3,9))
ENDPROC

## APL

'ZF15.9' ⎕FMT 7.125
00007.125000000

APL's ⎕FMT is similar to C's printf (only it operates on arrays).

## AWK

BEGIN {
r=7.125
printf " %9.3f\n",-r
printf " %9.3f\n",r
printf " %-9.3f\n",r
printf " %09.3f\n",-r
printf " %09.3f\n",r
printf " %-09.3f\n",r
}

Same output as the C code.

## AutoHotkey

contributed by Laszlo on the ahk forum

VarSetCapacity(p,len,Asc("0"))
Return SubStr(p x,1-len)
}

## BaCon

BaCon can use C style printf format specifiers.

' Formatted numeric output
n = 7.125
PRINT n FORMAT "%09.3f\n"
Output:
prompt\$ ./formatted
00007.125

## BBC BASIC

PRINT FNformat(PI, 9, 3)
PRINT FNformat(-PI, 9, 3)
END

DEF FNformat(n, sl%, dp%)
LOCAL @%
@% = &1020000 OR dp% << 8
IF n >= 0 THEN
= RIGHT\$(STRING\$(sl%,"0") + STR\$(n), sl%)
ENDIF
= "-" + RIGHT\$(STRING\$(sl%,"0") + STR\$(-n), sl%-1)
Output:
00003.142
-0003.142

## bc

First define a custom function for numeric output.

/*
* Print number n, using at least c characters.
*
* Different from normal, this function:
* 1. Uses the current ibase (not the obase) to print the number.
* 2. Prunes "0" digits from the right, so p(1.500, 1) prints "1.5".
* 3. Pads "0" digits to the left, so p(-1.5, 6) prints "-001.5".
* 4. Never prints a newline.
*
* Use an assignment, as t = p(1.5, 1), to discard the return value
* from this function so that bc not prints the return value.
*/
define p(n, c) {
auto d, d[], f, f[], i, m, r, s, v
s = scale /* Save original scale. */

if (n < 0) {
"-" /* Print negative sign. */
c -= 1
n = -n /* Remove negative sign from n. */
}

/* d[] takes digits before the radix point. */
scale = 0
for (m = n / 1; m != 0; m /= 10) d[d++] = m % 10

/* f[] takes digits after the radix point. */
r = n - (n / 1) /* r is these digits. */
scale = scale(n)
f = -1 /* f counts the digits of r. */
for (m = r + 1; m != 0; m /= 10) f += 1
scale = 0
r = r * (10 ^ f) / 1 /* Remove radix point from r. */
if (r != 0) {
while (r % 10 == 0) { /* Prune digits. */
f -= 1
r /= 10
}
for (i = 0; i < f; i++) {
f[i] = r % 10
r /= 10
}
}

/* Pad "0" digits to reach c characters. */
c -= d
if (f > 0) c -= 1 + f
for (1; c > 0; c--) "0" /* Print "0". */

/* i = index, m = maximum index, r = digit to print. */
m = d + f
for (i = 1; i <= m; i++) {
if (i <= d) r = d[d - i]
if (i > d) r = f[m - i]
if (i == d + 1) "." /* Print radix point. */

v = 0
if (r == v++) "0" /* Print digit. */
if (r == v++) "1"
if (r == v++) "2" /* r == 2 might not work, */
if (r == v++) "3" /* unless ibase is ten. */
if (r == v++) "4"
if (r == v++) "5"
if (r == v++) "6"
if (r == v++) "7"
if (r == v++) "8"
if (r == v++) "9"
if (r == v++) "A"
if (r == v++) "B"
if (r == v++) "C"
if (r == v++) "D"
if (r == v++) "E"
if (r == v++) "F"
}

scale = s /* Restore original scale. */
}

Then use this function to print 7.125 with 9 characters.

x = 7.125
"Decimal: "; t = p(x, 9); "
"
ibase = 16
"Hexadecimal: "; t = p(x, 9); "
"
ibase = 2
"Binary: "; t = p(x, 1001); "
"
quit
Output:
Decimal: 00007.125
Binary: 00111.001

## C#

class Program
{

static void Main(string[] args)
{

float myNumbers = 7.125F;

string strnumber = Convert.ToString(myNumbers);

}

}

## C

#include <stdio.h>
main(){
float r=7.125;
printf(" %9.3f\n",-r);
printf(" %9.3f\n",r);
printf(" %-9.3f\n",r);
printf(" %09.3f\n",-r);
printf(" %09.3f\n",r);
printf(" %-09.3f\n",r);
return 0;
}
Output:
-7.125
7.125
7.125
-0007.125
00007.125
7.125

## C++

#include <iostream>
#include <iomanip>

int main()
{
std::cout << std::setfill('0') << std::setw(9) << std::fixed << std::setprecision(3) << 7.125 << std::endl;
return 0;
}

## Clojure

Translation of: Common Lisp
Using cl format strings
(cl-format true "~9,3,,,'0F" 7.125)
Translation of: java
Using java format strings
(printf "%09.3f" 7.125) ; format works the same way (without side the effect of printing)

## COBOL

This is actually the easiest kind of numeric output to achieve in COBOL, because it requires no adjustments from the way numbers are stored internally (in fixed-point decimal). Each variable declaration requires a PIC or PICTURE clause describing the kind of data that will be stored there. In this case, we have 9 (a decimal digit), repeated five times; then V, the decimal point (cf. French virgule); and then three more decimal digits. Other terms that can appear in PICTURE clauses include A (a letter of the alphabet), X (a character), and Z (a decimal digit to be printed with leading spaces instead of leading zeros).

IDENTIFICATION DIVISION.
PROGRAM-ID. NUMERIC-OUTPUT-PROGRAM.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 WS-EXAMPLE.
05 X PIC 9(5)V9(3).
PROCEDURE DIVISION.
MOVE 7.125 TO X.
DISPLAY X UPON CONSOLE.
STOP RUN.
Output:
00007.125

## Common Lisp

(format t "~9,3,,,'0F" 7.125)

## D

import std.stdio;

void main() {
immutable r = 7.125;
writefln(" %9.3f", -r);
writefln(" %9.3f", r);
writefln(" %-9.3f", r);
writefln(" %09.3f", -r);
writefln(" %09.3f", r);
writefln(" %-09.3f", r);
}
Output:
-7.125
7.125
7.125
-0007.125
00007.125
7.125

## dc

Translation of: bc

First define a custom function for numeric output.

[*
* (n) (c) lpx
* Print number n, using at least c characters.
*
* Different from normal, this function:
* 1. Uses the current ibase (not the obase) to print the number.
* 2. Prunes "0" digits from the right, so [1.500 1 lxp] prints "1.5".
* 3. Pads "0" digits to the left, so [_1.5 6 lxp] prints "-001.5".
* 4. Never prints a newline.
*]sz
[
Sc Sn [Local n, c = from stack.]sz
K Ss [Local s = original scale.]sz
[Reserve local variables D, F, I, L.]sz
0 SD 0 SF 0 SI 0 SL

[ [If n < 0:]sz
[-]P [Print negative sign.]sz
lc 1 - sc [Decrement c.]sz
0 ln - sn [Negate n.]sz
]sI 0 ln <I

[*
* Array D[] takes digits before the radix point.
*]sz
0 k [scale = 0]sz
0 Sd [Local d = 0]sz
ln 1 / [Push digits before radix point.]sz
[ [Loop to fill D[]:]sz
d 10 % ld :D [D[d] = next digit.]sz
ld 1 + sd [Increment d.]sz
10 / [Remove digit.]sz
d 0 !=L [Loop until no digits.]sz
]sL d 0 !=L
sz [Pop digits.]sz

[*
* Array F[] takes digits after the radix point.
*]sz
ln ln 1 / - [Push digits after radix point.]sz
d X k [scale = enough.]sz
_1 Sf [Local f = -1]sz
d 1 + [Push 1 + digits after radix point.]sz
[ [Loop to count digits:]sz
lf 1 + sf [Increment f.]sz
10 / [Remove digit.]sz
d 0 !=L [Loop until no digits.]sz
]sL d 0 !=L
sz [Pop 1 + digits.]sz
0 k [scale = 0]sz
10 lf ^ * 1 / [Remove radix point from digits.]sz
[ [Loop to prune digits:]sz
lf 1 - sf [Decrement f.]sz
10 / [Remove digit.]sz
d 10 % 0 =L [Loop while last digit is 0.]sz
]sL d 10 % 0 =L
0 Si [Local i = 0]sz
[ [Loop to fill F[]:]sz
d 10 % li :F [F[i] = next digit.]sz
10 / [Remove digit.]sz
li 1 + si [Increment i.]sz
lf li <L [Loop while i < f.]sz
]sL lf li <L
sz [Pop digits.]sz

lc ld - [Push count = c - d.]sz
[ [If f > 0:]sz
1 lf + - [Subtract 1 radix point + f from count.]sz
]sI 0 lf >I
[ [Loop:]sz
1 - [Decrement count.]sz
d 0 <L [Loop while count > 0.]sz
]sL d 0 <L
sz [Pop count.]sz

[ [Local function (digit) lPx:]sz
[ [Execute:]sz
[*
* Push the string that matches the digit.
*]sz
[[0] 2Q]sI d 0 =I [[1] 2Q]sI d 1 =I [[2] 2Q]sI d 2 =I [[3] 2Q]sI d 3 =I
[[4] 2Q]sI d 4 =I [[5] 2Q]sI d 5 =I [[6] 2Q]sI d 6 =I [[7] 2Q]sI d 7 =I
[[8] 2Q]sI d 8 =I [[9] 2Q]sI d 9 =I [[A] 2Q]sI d A =I [[B] 2Q]sI d B =I
[[C] 2Q]sI d C =I [[D] 2Q]sI d D =I [[E] 2Q]sI d E =I [[F] 2Q]sI d F =I
[?] [Else push "?".]sz
]x
P [Print the string.]sz
sz [Pop the digit.]sz
]SP
ld [Push counter = d.]sz
[ [Loop:]sz
1 - [Decrement counter.]sz
d ;D lPx [Print digit D[counter].]sz
d 0 <L [Loop while counter > 0.]sz
]sL d 0 <L
sz [Pop counter.]sz
[ [If f > 0:]sz
lf [Push counter = f.]sz
[ [Loop:]sz
1 - [Decrement counter.]sz
d ;F lPx [Print digit F[counter].]sz
d 0 <L [Loop while counter > 0.]sz
]sL d 0 <L
sz [Pop counter.]sz
]sI 0 lf >I

[Restore variables n, c, d, f, D, F, L, I, P.]sz
Lnsz Lcsz Ldsz Lfsz LDsz LFsz LLsz LIsz LPsz
Ls k [Restore variable s. Restore original scale.]sz
]sp

Then use this function to print 7.125 with 9 characters:

7.125 sx
[Decimal: ]P lx 9 lpx [
]P 16 i [Hexadecimal: ]P lx 9 lpx [
]P 2 i [Binary: ]P lx 9 lpx [
]P
Output:
Decimal: 00007.125
Binary: 00111.001

## Delphi

program FormattedNumericOutput;

{\$APPTYPE CONSOLE}

uses
SysUtils;

const
fVal = 7.125;

begin
Writeln(FormatFloat('0000#.000',fVal));
Writeln(FormatFloat('0000#.0000000',fVal));
Writeln(FormatFloat('##.0000000',fVal));
Writeln(FormatFloat('0',fVal));
Writeln(FormatFloat('#.#E-0',fVal));
Writeln(FormatFloat('#,##0.00;;Zero',fVal));
end.

Output:
00007.125
00007.1250000
7.1250000
7
7.1E0
7.13

## Eiffel

Works with: Eiffel Studio version 6.6

note
description : "{
2 Examples are given.
The first example uses the standard library's FORMAT_DOUBLE class.
The second example uses the AEL_PRINTF class from the freely available
Amalasoft Eiffel Library (AEL).

}"

class APPLICATION

inherit
AEL_PRINTF -- Optional, see below

create
make

feature {NONE} -- Initialization

make
-- Run application.
do
print_formatted_std (7.125)
print_formatted_ael (7.125)
end

--|--------------------------------------------------------------

print_formatted_std (v: REAL_64)
-- Print the value 'v' as a zero-padded string in a fixed
-- overall width of 9 places and, with a precision of
-- to 3 places to the right of the decimal point.
-- Use the FORMAT_DOUBLE class from the standard library
local
fmt: FORMAT_DOUBLE
do
create fmt.make (9, 3)
fmt.zero_fill
print (fmt.formatted (v) + "%N")
end

--|--------------------------------------------------------------

print_formatted_ael (v: REAL_64)
-- Print the value 'v' as a zero-padded string in a fixed
-- overall width of 9 places and, with a precision of
-- to 3 places to the right of the decimal point.
-- Use the AEL_PRINTF class from the Amalasoft Eiffel Library
-- freely available from www.amalasoft.com
do
-- printf accepts a format string and an argument list
-- The argument list is a container (often a manifest
-- array) of values corresponding to the type of the format
-- specified in the format string argument.
-- When only one argument is needed, then there is also the
-- option to use just the value, without the container.
-- In this example, the line would be:
-- printf ("%%09.3f%N", v)
-- The more deliberate form is used in the actual example,
-- as it is more representative of common usage, when there
-- are multiple value arguments.

printf ("%%09.3f%N", << v >>)
end

end

## Elixir

n = 7.125
:io.fwrite "~f~n", [n]
:io.fwrite "~.3f~n", [n]
:io.fwrite "~9f~n", [n]
:io.fwrite "~9.3f~n", [n]
:io.fwrite "~9..0f~n", [n]
:io.fwrite "~9.3.0f~n", [n]
:io.fwrite "~9.3._f~n", [n]
:io.fwrite "~f~n", [-n]
:io.fwrite "~9.3f~n", [-n]
:io.fwrite "~9.3.0f~n", [-n]
:io.fwrite "~e~n", [n]
:io.fwrite "~12.4e~n", [n]
:io.fwrite "~12.4.0e~n", [n]
Output:
7.125000
7.125
7.125000
7.125
07.125000
00007.125
____7.125
-7.125000
-7.125
000-7.125
7.12500e+0
7.125e+0
00007.125e+0

## Emacs Lisp

(format "%09.3f" 7.125)
=>
"00007.125"

format is similar to C sprintf. See GNU Elisp manual on Formatting Strings.

## Erlang

Built in

Output:
14> io:fwrite("~9.3.0f~n", [7.125]).
00007.125

## ERRE

PROGRAM FORMATTED

PROCEDURE FORMATTED_PRINT(N,LENGTH,DEC_PLACES->FP\$)

LOCAL I,C\$,NN\$

FORMAT\$=STRING\$(LENGTH,"#")+"."

FOR I=1 TO DEC_PLACES DO
FORMAT\$=FORMAT\$+"#"
END FOR

OPEN("O",1,"FORMAT.\$\$\$")
WRITE(#1,FORMAT\$;N)
CLOSE(1)

OPEN("I",1,"FORMAT.\$\$\$")
INPUT(LINE,#1,N\$)
CLOSE(1)

FOR I=1 TO LEN(N\$) DO
C\$=MID\$(N\$,I,1)
IF C\$=" " OR C\$="%" THEN NN\$=NN\$+"0" ELSE NN\$=NN\$+C\$
END FOR

FP\$=RIGHT\$("000000000000"+NN\$,LENGTH) ! chop to required length

END PROCEDURE

BEGIN

PRINT(CHR\$(12);) ! CLS

FOR I=1 TO 10 DO
N=RND(1)*10^(INT(10*RND(1))-2)
FORMATTED_PRINT(N,16,5->FP\$)
PRINT("Raw number =";N;TAB(30);"Using custom function =";FP\$)
END FOR

END PROGRAM
Output:
Raw number = 1213.501        Using custom function =0000001213.50100
Raw number = 86886.11        Using custom function =0000086886.11000
Raw number = 7.98853E-03     Using custom function =0000000000.00799
Raw number = 49.03128        Using custom function =0000000049.03128
Raw number = 1072496         Using custom function =0001072496.00000
Raw number = 703.8703        Using custom function =0000000703.87030
Raw number = 9.711614        Using custom function =0000000009.71161
Raw number = 9561278         Using custom function =0009561278.00000
Raw number = 534.9367        Using custom function =0000000534.93670
Raw number = 67121.88        Using custom function =0000067121.88000

## Euphoria

constant r = 7.125
printf(1,"%9.3f\n",-r)
printf(1,"%9.3f\n",r)
printf(1,"%-9.3f\n",r)
printf(1,"%09.3f\n",-r)
printf(1,"%09.3f\n",r)
printf(1,"%-09.3f\n",r)
Output:
-7.125
7.125
7.125
-0007.125
00007.125
7.125

## FreeBASIC

' FB 1.05.0 Win64

#Include "vbcompat.bi"

Dim s As String = Format(7.125, "00000.0##")
Print s
Sleep
Output:
00007.125

## F#

printfn "%09.3f" 7.125f

## Factor

USE: formatting
7.125 "%09.3f\n" printf
Output:
00007.125

## Fantom

class Main
{
public static Void main()
{
}
}

## Forth

Forth has a rather rich set of number formatting words, which makes formatted output very flexible but sometime cumbersome.

Here one way to generate the required output. Note that the number generated is NOT truncated to the field width. If you wish to truncate the number, remove #s and 1- from the definition. (The 1- is necessary because #s always generates at least one digit, even if it's zero.)

\ format 'n' digits of the double word 'd'
: #n ( d n -- d ) 0 ?do # loop ;

\ ud.0 prints an unsigned double
: ud.0 ( d n -- ) <# 1- #n #s #> type ;

\ d.0 prints a signed double
: d.0 ( d n -- ) >r tuck dabs <# r> 1- #n #s rot sign #> type ;

Usage example:

Type:    123 s>d  8 ud.0
Result: 00000123 ok
Type: -123 s>d 8 d.0
Result: -00000123 ok

#### Detail

Forth's number formatting words are different than many other languages because they are active code rather than using a pattern string. This small set of seven routines ( >DIGIT <# #> # #S HOLD SIGN ) allow arbitrary number formatting of double precision and single precision numbers. The number is created in a "hold' buffer the output is typically a Forth style stack-string consisting of an address and a length.

Typical of Forth the using the formatting routines means putting things in reverse order. We are also free to create a mnemonic name that gives a reminder at how numbers will appear.

To replicate the example for this task we could write:

: '.'   [CHAR] . HOLD ; \ HOLD inserts a character into the number string
\                                    right side .  left side
: 0000#.###  ( d -- addr len) DABS <#    # # # '.' # # # # #    #> ;

At the console we can input a double number, execute the format routine and type the resulting string.

7.125 0000#.### TYPE 000007.125 ok

## Fortran

Works with: Fortran version 90 and later

Using standard data edit descriptors it is only possible to precede Integer data with leading zeros.

INTEGER :: number = 7125
WRITE(*,"(I8.8)") number ! Prints 00007125

### On the other hand

One can engage in trickery via FORMAT statements, in particular the T format option. Unlike actual tab settings which on a typewriter go to a particular column following, Tn means go to column n.

INTEGER IV
REAL V
DATA V/7.125/ !A positive number.
IV = V !Grab the integer part.
WRITE (6,1) V,IV
1 FORMAT (F9.3,T1,I5.5)
END

Output is

00007.125

This would need adjustment for other sizes, but works as follows: The value part is printed (in the format system's working area) as "bbbb7.125" (b's standing for spaces), then the T1 moves the finger back to column one, and the I5.5 writes out "00007", the .5 addendum to I5 meaning print leading zeroes rather than leading spaces. It does not overwrite the subsequent ".125", and as no further output items appear the deed is done. Only later Fortran offers the addendum feature, but the Tab feature is much older.

Another approach would be to write forth a literal "0000" instead of the integer, but this is less flexible. In the absence of the .5 addendum, write the output to a character string (or equivalent), replace leading spaces by zeroes (watching out for negative numbers), and print the result.

## FutureBasic

include "ConsoleWindow"

print using "0000#.###"; 7.125

Output:

00007.125

## Gambas

Public Sub Main()

Print Format("7.125", "00000.000")

End

Output:

00007.125

## gnuplot

print sprintf("%09.3f", 7.125)

## Go

fmt.Printf("%09.3f", 7.125)

## Groovy

Solution:

printf ("%09.3f", 7.125)
Output:
00007.125

import Text.Printf
main =
printf "%09.3f" 7.125

## HicEst

WRITE(ClipBoard, Format='i5.5, F4.3') INT(7.125), MOD(7.125, 1)    ! 00007.125

## i

concept FixedLengthFormat(value, length) {
string = text(abs(value))
prefix = ""
sign = ""

if value < 0
sign = "-"
end

if #string < length
prefix = "0"*(length-#sign-#string-#prefix)
end

return sign+prefix+string
}

software {
d = 7.125
print(FixedLengthFormat(d, 9))
print(FixedLengthFormat(-d, 9))
}

## IDL

n = 7.125
print, n, format='(f08.3)'
;==> 0007.125

## Icon and Unicon

procedure main()

every r := &pi | -r | 100-r do {
write(r," <=== no printf")
every p := "|%r|" | "|%9.3r|" | "|%-9.3r|" | "|%0.3r|" | "|%e|" | "|%d|" do
write(sprintf(p,r)," <=== sprintf ",p)
}
end
Output:
Abbreviated
3.141592653589793 <=== no printf
|3.141593| <=== sprintf |%r|
|    3.142| <=== sprintf |%9.3r|
|3.142    | <=== sprintf |%-9.3r|
|3.142| <=== sprintf |%0.3r|
|   3.141593e0| <=== sprintf |%e|
|3| <=== sprintf |%d|
provides printf

## IS-BASIC

100 LET F=7.125
110 PRINT USING "-%%%%%.###":F

## J

'r<0>9.3' (8!:2) 7.125
00007.125

## Java

Works with: Java version 1.5+

Stealing printf from C/C++:

public class Printing{
public static void main(String[] args){
double printer = 7.125;
System.out.printf("%09.3f",printer);//System.out.format works the same way
}
}
Output:
000000007.125

Using NumberFormat:

import java.text.DecimalFormat;
import java.text.NumberFormat;

public class Format {
public static void main(String[] args){
NumberFormat numForm = new DecimalFormat();
numForm.setMinimumIntegerDigits(9);
//Maximum also available for Integer digits and Fraction digits
numForm.setGroupingUsed(false);//stops it from inserting commas
System.out.println(numForm.format(7.125));

//example of Fraction digit options
numForm.setMinimumIntegerDigits(5);
numForm.setMinimumFractionDigits(5);
System.out.println(numForm.format(7.125));
numForm.setMinimumFractionDigits(0);
numForm.setMaximumFractionDigits(2);
System.out.println(numForm.format(7.125));
System.out.println(numForm.format(7.135));//rounds to even
}
}
Output:
000000007.125
00007.12500
00007.12
00007.14

## JavaScript

var n = 123;
var str = ("00000" + n).slice(-5);

or, put in browser URL: javascript:n=123;alert(("00000"+n).slice(-5));

Also, a 60-line implementation of sprintf can be found here.

## jq

The jq function pp0/1 as defined below is written in accordance with the task requirements, but no truncation occurs; pp/1 is similar but is likely to be more useful as the decimal point is aligned if possible.

def pp0(width):
tostring
| if width > length then (width - length) * "0" + . else . end;

# pp(left; right) formats a decimal number to occupy
# (left+right+1) positions if possible,
# where "left" is the number of characters to the left of
# the decimal point, and similarly for "right".
def pp(left; right):
def lpad: if (left > length) then ((left - length) * "0") + . else . end;
tostring as \$s
| \$s
| index(".") as \$ix
| ((if \$ix then \$s[0:\$ix] else \$s end) | lpad) + "." +
(if \$ix then \$s[\$ix+1:] | .[0:right] else "" end);

Examples:

(1.0, 12.3, 333.333, 1e6) | pp0(10)

produces

0000000001
00000012.3
000333.333
0001000000
(1.0, 12.3, 333.333, 1e6) | pp(4;2)

produces

0001.
0012.3
0333.33
1000000.

## Julia

Julia's @sprintf macro provides string formatting that is similar to that of the c function of the same name. Though easy to use and efficient, @sprintf has limited flexibility, as its format specification must be a string literal, precluding its use in dynamic formatting. Greater flexibility is available via the Formatting package, which provides an implementation of Python's format specification mini-language. This solution demonstrates both of these techniques to provide the leading zero padded floating point format suggested in the task description ("%09.3f").

test = [7.125, [rand()*10^rand(0:4) for i in 1:9]]

println("Formatting some numbers with the @sprintf macro (using \"%09.3f\"):")
for i in test
println(@sprintf "  %09.3f" i)
end

using Formatting
println()
println("The same thing using the Formatting package:")
fe = FormatExpr(" {1:09.3f}")
for i in test
printfmtln(fe, i)
end

Output:
Formatting some numbers with the @sprintf macro (using "%09.3f"):
00007.125
00001.734
00903.432
00000.980
00002.271
00559.864
00105.497
00069.955
00046.107
04970.430

The same thing using the Formatting package:
00007.125
00001.734
00903.432
00000.980
00002.271
00559.864
00105.497
00069.955
00046.107
04970.430

## Kotlin

// version 1.0.5-2

fun main(args: Array<String>) {
val num = 7.125
println("%09.3f".format(num))
}
Output:
00007.125

Output:
00007.125

## Liberty BASIC

Custom function builds on the supplied 'print using( "###.###", n)'.
NB no check that this does not truncate high-order digits... and remember LB calculates with more figures than its normal 'print' displays.

for i =1 to 10
n =rnd( 1) *10^( int( 10 *rnd(1)) -2)
print "Raw number ="; n; "Using custom function ="; FormattedPrint\$( n, 16, 5)
next i
end

function FormattedPrint\$( n, length, decPlaces)
format\$ ="#."
for i =1 to decPlaces
format\$ =format\$ +"#"
next i

n\$ =using( format\$, n) ' remove leading spaces if less than 3 figs left of decimal
for i =1 to len( n\$)
c\$ =mid\$( n\$, i, 1)
if c\$ =" " or c\$ ="%" then nn\$ =nn\$ +"0" else nn\$ =nn\$ +c\$
next i
FormattedPrint\$ =right\$( "000000000000" +nn\$, length) ' chop to required length
end function

Output:
Raw number =0.16045274      Using custom function =0000000000.16045
Raw number =13221.2247      Using custom function =0000013221.22474
Raw number =738.134167      Using custom function =0000000738.13417
Raw number =5.07495908      Using custom function =0000000005.07496
Raw number =4471738.93      Using custom function =0004471738.92920
Raw number =48.7531874      Using custom function =0000000048.75319
Raw number =0.26086972e-1   Using custom function =0000000000.02609
Raw number =0.86559862      Using custom function =0000000000.86560
Raw number =818579.045      Using custom function =0000818579.04498
Raw number =81.460946       Using custom function =0000000081.46095

## Logo

Various collection functions, such as MAP and FILTER, will work on individual characters of a string when given a word instead of a list.

output map [ifelse ? = "| | ["0] [?]] form :num :width :precision
end
print zpad 7.125 9 3  ; 00007.125
Works with: UCB Logo

As a debugging feature, you can drop down to C language printf formatting by giving -1 for the width and a format string for the precision.

print form 7.125 -1 "|%09.3f|    ; 00007.125

## Lua

function digits(n) return math.floor(math.log(n) / math.log(10))+1 end
function fixedprint(num, digs) --digs = number of digits before decimal point
for i = 1, digs - digits(num) do
io.write"0"
end
print(num)
end

fixedprint(7.125, 5) --> 00007.125

An easier way to do that would be

print(string.format("%09.3d",7.125))

## M2000 Interpreter

We can use ? as Print

Print str\$(7.125,"00000.000")

## Maple

printf("%f", Pi);
3.141593
printf("%.0f", Pi);
3
printf("%.2f", Pi);
3.14
printf("%08.2f", Pi);
00003.14
printf("%8.2f", Pi);
3.14
printf("%-8.2f|", Pi);
3.14 |
printf("%+08.2f", Pi);
+0003.14
printf("%+0*.*f",8, 2, Pi);
+0003.14

## Mathematica / Wolfram Language

StringTake["000000" <> ToString[7.125], -9]
00007.125

## MATLAB / Octave

>> disp(sprintf('%09.3f',7.125))
00007.125

## Mercury

:- module formatted_numeric_output.
:- interface.
:- import_module io.

:- pred main(io::di, io::uo) is det.

:- implementation.
:- import_module list, string.

main(!IO) :-
io.format("%09.3f\n", [f(7.125)], !IO).

## Modula-3

Modules IO and Fmt must be imported before use.

## NetRexx

/* NetRexx */

options replace format comments java crossref savelog symbols binary

import java.text.MessageFormat

sevenPointOneTwoFive = double 7.125

-- using NetRexx Built-In Functions (BIFs)
say Rexx(sevenPointOneTwoFive).format(5, 3).changestr(' ', '0')

-- using Java library constructs
System.out.printf('%09.3f\n', [Double(sevenPointOneTwoFive)])
say MessageFormat.format('{0,number,#00000.###}', [Double(sevenPointOneTwoFive)])

return

Output:
00007.125
00007.125
00007.125

## Nim

import strfmt
const r = 7.125
echo r
echo((-r).format("9.3f"))
echo(r.format("9.3f"))
echo((-r).format("09.3f"))
echo(r.format("09.3f"))
Output:
7.1250000000000000e+00
-7.125
7.125
-0007.125
00007.125

## Oberon-2

Module Out must be imported before use.

Out.Real(7.125, 9, 0);

## Objective-C

NSLog(@"%09.3f", 7.125);

or

NSLog(@"%@", [NSString stringWithFormat:@"%09.3f", 7.125]);

## OCaml

Printf.printf "%09.3f\n" 7.125

## OpenEdge/Progress

MESSAGE
STRING( 7.125, "99999.999" )

## Oz

It is possible to set the precision used for float printing (where "precision" means the total number of digits used).

It doesn't seem to be possible to use leading zeros for printing, so we implement this manually:

declare
fun {PrintFloat X Prec}
{Property.put 'print.floatPrecision' Prec}
S = {Float.toString X}
in
{Append
for I in 1..Prec-{Length S}+1 collect:C do {C &0} end
S}
end
in
{System.showInfo {PrintFloat 7.125 8}}

## PARI/GP

Works with: PARI/GP version 2.4.3 and above
printf("%09.4f\n", Pi)

See Delphi

## Perl

Works with: Perl version 5.x
printf "%09.3f\n", 7.125;

## Perl 6

say 7.125.fmt('%09.3f');

## Phix

printf(1,"%09.3f\n",7.125)
Output:
00007.125

## PHP

or

printf("%09.3f\n", 7.125);

## PicoLisp

(pad 9 (format 7125 3 ",")) # European format

## PL/I

put edit (X) (p'999999.V999'); /* Western format. */

put edit (X) (p'999999,V999'); /* In European format. */

lz: Proc Options(main);
/*********************************************************************
* 10.09.2013 Walter Pachl one way to treat negative numbers
* another would be using a Picture of 'S(9)9.V(3)9' or '-(9)9.V(3)9'
*********************************************************************/
Call z2lz(1.2);
Call z2lz(-1.32);
Call z2lz(123456789.012);
Call z2lz(-23456789.012);
Call z2lz(-123456789.012);

z2lz: Proc(z);
Dcl z Dec Fixed(15,3); ;
Dcl p Pic'(9)9.V(3)9';
p=z;
If z<0 Then
If left(s,1)='0' Then substr(s,1,1)='-';
Else Do;
Put Skip List(z,'can''t be formatted that way');
Return;
End;
Put Skip List(z,s);
End;
End;
Output:
1.200      000000001.200
-1.320      -00000001.320
123456789.012      123456789.012
-23456789.012      -23456789.012
-123456789.012      can't be formatted that way

## Pop11

The task is underspecified, so we present a few alternatives.

;;; field of length 12, 3 digits after decimal place
format_print('~12,3,0,`*,`0F', [1299.19]);
;;; prints "00001299.190"
format_print('~12,3,0,`*,`0F', [100000000000000000]);
;;; Since the number does not fit into the field prints "************"
;;; that is stars instead of the number
format_print('~12,3,0,`*,`0F', [-1299.19]);
;;; prints "000-1299.190"
;;; that is _leading zeros_ before sign

format_print('~3,1,12,`0:\$', [1299.19]);
;;; prints "00001299.190"
format_print('~3,1,12,`0:\$', [-1299.19]);
;;; prints "-0001299.190"
;;; that is sign before leading zeros
format_print('~3,1,12,`0:\$', [100000000000000000]);
;;; prints "100000000000000000.000"
;;; that is uses more space if the number does not fit into
;;; fixed width

## PowerShell

Using the -f formatting operator and a custom format string:

'{0:00000.000}' -f 7.125

or by invoking ToString on the number:

7.125.ToString('00000.000')

## PureBasic

Using RSet() to pad 7.125 with 3 decimals converted to a string, to 8 char length.

RSet(StrF(7.125,3),8,"0")    ; Will be 0007.125

## Python

Works with: Python version 2.5

Python has 3 different floating point formatting methods: "%e","%f" & "%g". The "%g" format is a beautified hybrid of "%e" and "%f". There is no way of specifying how many digits appear in the exponent when printed with a format.

from math import pi, exp
r = exp(pi)-pi
print r
print "e=%e f=%f g=%g G=%G s=%s r=%r!"%(r,r,r,r,r,r)
print "e=%9.4e f=%9.4f g=%9.4g!"%(-r,-r,-r)
print "e=%9.4e f=%9.4f g=%9.4g!"%(r,r,r)
print "e=%-9.4e f=%-9.4f g=%-9.4g!"%(r,r,r)
print "e=%09.4e f=%09.4f g=%09.4g!"%(-r,-r,-r)
print "e=%09.4e f=%09.4f g=%09.4g!"%(r,r,r)
print "e=%-09.4e f=%-09.4f g=%-09.4g!"%(r,r,r)
Output:
19.9990999792
e=1.999910e+01 f=19.999100 g=19.9991 G=19.9991 s=19.9990999792 r=19.999099979189474!
e=-1.9999e+01 f= -19.9991 g=      -20!
e=1.9999e+01 f=  19.9991 g=       20!
e=1.9999e+01 f=19.9991   g=20       !
e=-1.9999e+01 f=-019.9991 g=-00000020!
e=1.9999e+01 f=0019.9991 g=000000020!
e=1.9999e+01 f=19.9991   g=20       !
Works with: Python version 3
from math import pi, exp
r = exp(pi)-pi
print(r)
print("e={0:e} f={0:f} g={0:g} G={0:G} s={0!s} r={0!r}!".format(r))
print("e={0:9.4e} f={0:9.4f} g={0:9.4g}!".format(-r))
print("e={0:9.4e} f={0:9.4f} g={0:9.4g}!".format(r))
print("e={0:-9.4e} f={0:-9.4f} g={0:-9.4g}!".format(r))
print("e={0:09.4e} f={0:09.4f} g={0:09.4g}!".format(-r))
print("e={0:09.4e} f={0:09.4f} g={0:09.4g}!".format(r))
print("e={0:-09.4e} f={0:-09.4f} g={0:-09.4g}!".format(r))
Output:
19.9990999792
e=1.999910e+01 f=19.999100 g=19.9991 G=19.9991 s=19.9990999792 r=19.999099979189474!
e=-1.9999e+01 f= -19.9991 g=      -20!
e=1.9999e+01 f=  19.9991 g=       20!
e=1.9999e+01 f=19.9991   g=20       !
e=-1.9999e+01 f=-019.9991 g=-00000020!
e=1.9999e+01 f=0019.9991 g=000000020!
e=1.9999e+01 f=19.9991   g=20       !

## R

sprintf brings the printf goodness one expects:

> sprintf("%f", pi)
[1] "3.141593"
> sprintf("%.3f", pi)
[1] "3.142"
> sprintf("%1.0f", pi)
[1] "3"
> sprintf("%5.1f", pi)
[1] " 3.1"
> sprintf("%05.1f", pi)
[1] "003.1"
> sprintf("%+f", pi)
[1] "+3.141593"
> sprintf("% f", pi)
[1] " 3.141593"
> sprintf("%-10f", pi)# left justified
[1] "3.141593 "
> sprintf("%e", pi)
[1] "3.141593e+00"
> sprintf("%E", pi)
[1] "3.141593E+00"
> sprintf("%g", pi)
[1] "3.14159"
> sprintf("%g", 1e6 * pi) # -> exponential
[1] "3.14159e+06"
> sprintf("%.9g", 1e6 * pi) # -> "fixed"
[1] "3141592.65"
> sprintf("%G", 1e-6 * pi)
[1] "3.14159E-06"

formatC also provides C-style string formatting.

formatC(x, width=9, flag="0")
# "00007.125"

Other string formatting functions include

format, prettynum

## Racket

-> (displayln (~a 7.125 #:width 9 #:align 'right #:pad-string "0"))
00007.125

## REBOL

rebol [
Title: "Formatted Numeric Output"
URL: http://rosettacode.org/wiki/Formatted_Numeric_Output
]

; REBOL has no built-in facilities for printing pictured output.
; However, it's not too hard to cook something up using the
; string manipulation facilities.

"Pad number with zeros or spaces. Works on entire number."
/local nn c s
][
n: to-string n c: " " s: ""

if not space [
c: "0"
if #"-" = n/1 [pad: pad - 1 n: copy skip n 1 s: "-"]
]

insert/dup n c (pad - length? n)
insert n s
n
]

; These tests replicate the C example output.

print 7.125
print 7.125
Output:
-7.125
7.125
7.125
-0007.125
00007.125
7.125

## Raven

7.125 "%09.3f" print

00007.125
Translation of: Python
define PI
-1 acos

PI exp PI - as r
r print "\n" print
r "" prefer "s=%s!\n" print
r dup dup dup dup "e=%e f=%f g=%g G=%G!\n" print
-1 r * dup dup "e=%9.4e f=%9.4f g=%9.4g!\n" print
r dup dup "e=%9.4e f=%9.4f g=%9.4g!\n" print
r dup dup "e=%-9.4e f=%-9.4f g=%-9.4g!\n" print
r -1 * dup dup "e=%09.4e f=%09.4f g=%09.4g!\n" print
r dup dup "e=%09.4e f=%09.4f g=%09.4g!\n" print
r dup dup "e=%-09.4e f=%-09.4f g=%-09.4g!\n" print
19.9991
s=19.999100!
e=1.999910e+01 f=19.999100 g=19.9991 G=19.9991!
e=-1.9999e+01 f= -19.9991 g= -20!
e=1.9999e+01 f= 19.9991 g= 20!
e=1.9999e+01 f=19.9991 g=20  !
e=-1.9999e+01 f=-019.9991 g=-00000020!
e=1.9999e+01 f=0019.9991 g=000000020!
e=1.9999e+01 f=19.9991 g=20  !

## REXX

/*REXX program shows various ways to  add leading zeroes  to numbers.   */
a=7.125
b=translate(format(a,10),0,' ')
say 'a=' a
say 'b=' b
say

c=8.37
d=right(c,20,0)
say 'c=' c
say 'd=' d
say

e=19.46
f='000000'e
say 'e=' e
say 'f=' f
say

g=18.25e+1
h=000000||g
say 'g=' g
say 'h=' h
say

i=45.2
j=translate(' 'i,0," ")
say 'i=' i
say 'j=' j
say

k=36.007
l=insert(00000000,k,0)
say 'k=' k
say 'l=' l
say

m=.10055
n=copies(0,20)m
say 'm=' m
say 'n=' n
say

p=4.060
q=0000000000000||p
say 'p=' p
say 'q=' q
say

r=876
s=substr(r+10000000,2)
say 'r=' r
say 's=' s
say

t=13.02
u=reverse(reverse(t)000000000)
say 't=' t
say 'u=' u
/*stick a fork in it, we're done.*/
Output:
a= 7.125
b= 0000000007.125

c= 8.37
d= 00000000000000008.37

e= 19.46
f= 00000019.46

g= 18.25E+1
h= 00000018.25E+1

i= 45.2
j= 00000045.2

k= 36.007
l= 0000000036.007

m= .10055
n= 00000000000000000000.10055

p= 4.060
q= 00000000000004.060

r= 876
s= 0000876

t= 13.02
u= 00000000013.02

## Ring

decimals(3)
see fixedprint(7.125, 5) + nl

func fixedprint num, digs
for i = 1 to digs - len(string(floor(num)))
see "0"
next
see num + nl

## Ruby

r = 7.125
printf " %9.3f\n", r #=> 7.125
printf " %09.3f\n", r #=> 00007.125
printf " %09.3f\n", -r #=> -0007.125
printf " %+09.3f\n", r #=> +0007.125
puts " %9.3f" % r #=> 7.125
puts " %09.3f" % r #=> 00007.125
puts " %09.3f" % -r #=> -0007.125
puts " %+09.3f" % r #=> +0007.125

## Run BASIC

print right\$("00000";using("#####.##",7.125),8) ' => 00007.13

## Rust

fn main() {
let x = 7.125;

println!("{:9}", x);
println!("{:09}", x);
println!("{:9}", -x);
println!("{:09}", -x);
}

Output:
7.125
00007.125
-7.125
-0007.125

## Sather

The Fill options should fill with any character, but it is still (!) not implemented; according to ICSI Sather library documentation (GNU Sather library documentation is missing) works only for string, bools and characters, but a test has revealed it does not work in either way (yet) (GNU Sather v1.2.3).

class MAIN is
main is
#OUT + #FMT("<F0 #####.###>", 7.1257) + "\n";
#OUT + #FMT("<F0 #####.###>", 7.1254) + "\n";
end;
end;

Luckly the C-like formats are supported too:

#OUT + #FMT("%09.3f", 7.125) + "\n";

## Scala

Library: Scala
Works with: Scala version 2.10.2

As shown in a Scala Worksheet:

object FormattedNumeric {
val r = 7.125 //> r  : Double = 7.125
println(f" \${-r}%9.3f"); //> -7,125
println(f" \$r%9.3f"); //> 7,125
println(f" \$r%-9.3f"); //> 7,125
println(f" \${-r}%09.3f"); //> -0007,125
println(f" \$r%09.3f"); //> 00007,125
println(f" \$r%-9.3f"); //> 7,125
println(f" \$r%+09.3f"); //> +0007,125
}

## Scheme

Works with: Gauche Scheme

Obtain the implementation of SRFI 54 from http://srfi.schemers.org/srfi-54/srfi-54.html and save it as "srfi-54.scm" in directory Gauche/share/gauche/site/lib/

(define x 295643087.65432)

(dotimes (i 4)
(print (cat x 25 3.0 #\0 (list #\, (- 4 i)))))

Output:
00000000002,9564,3087.654
0000000000295,643,087.654
00000002,95,64,30,87.65,4
002,9,5,6,4,3,0,8,7.6,5,4

## Seed7

\$ include "seed7_05.s7i";
include "float.s7i";

const proc: main is func
local
const float: r is 7.125;
begin
writeln( r digits 3 lpad 9);
writeln( r digits 3 lpad0 9);
writeln( r digits 3);
writeln(-r digits 3);
end func;
Output:
7.125
-7.125
00007.125
-0007.125
7.125
-7.125

## Sidef

printf("%09.3f\n", 7.125);

or

say ("%09.3f" % 7.125);
Output:
00007.125

## Smalltalk

Works with: Pharo 1.1.1
Transcript show: (7.125 printPaddedWith: \$0 to: 3.6); cr.
"output: 007.125000"
Works with: Smalltalk/X
(7.123 asFixedPoint:3)  printOn: Transcript leftPaddedTo: 9 with: \$0
"output: 00007.125"

notice that printOn:* is implemented in Object;thus any object can be printed with padding this way.

Using the PrintfScanf utility:

PrintfScanf new printf:'%08.3f' arguments: { 7.125 }

## SQL

Works with: MS SQL version 2005
DECLARE @n INT
SELECT @n=123
SELECT SUBSTRING(CONVERT(CHAR(5), 10000+@n),2,4) AS FourDigits

SET @n=5
print "TwoDigits: " + SUBSTRING(CONVERT(CHAR(3), 100+@n),2,2)
--Output: 05

## Standard ML

print (StringCvt.padLeft #"0" 9 (Real.fmt (StringCvt.FIX (SOME 3)) 7.125) ^ "\n")
Works with: SML/NJ
print (Format.format "%09.3f\n" [Format.REAL 7.125])

## Stata

See format in Stata help.

. display %010.3f (57/8)
000007.125

Output:
00007.125

## Tcl

set number 7.342
format "%08.3f" \$number

Use with puts if output is desired to go to a channel.

## TI-89 BASIC

 This example is in need of improvement: It does not handle negative numbers.
right("00000" & format(7.12511, "f3"), 9)

needs values
value n
123 to n

2 import printf
" %08d" n printf

## Ursala

The library function printf calls the host system's C library function by that name and can cope with any of the same numeric formats.

#import flo

x = 7.125

#show+

t = <printf/'%09.3f' x>
Output:
00007.125

## VBA

Option Explicit

Sub Main()
Debug.Print fFormat(13, 2, 1230.3333)
Debug.Print fFormat(2, 13, 1230.3333)
Debug.Print fFormat(10, 5, 0.3333)
Debug.Print fFormat(13, 2, 1230)
End Sub

Private Function fFormat(NbInt As Integer, NbDec As Integer, Nb As Double) As String
'NbInt : Lenght of integral part
'NbDec : Lenght of decimal part
'Nb : decimal on integer number
Dim u As String, v As String, i As Integer
u = CStr(Nb)
i = InStr(u, Application.DecimalSeparator)
If i > 0 Then
v = Mid(u, i + 1)
u = Left(u, i - 1)
fFormat = Right(String(NbInt, "0") & u, NbInt) & Application.DecimalSeparator & Left(v & String(NbDec, "0"), NbDec)
Else
fFormat = Right(String(NbInt, "0") & u, NbInt) & Application.DecimalSeparator & String(NbDec, "0")
End If
End Function

Output:
0000000001230.33
30.3333000000000
0000000000.33330
0000000001230.00

## VBScript

Works with: Windows Script Host version *

a = 1234.5678

' Round to three decimal places. Groups by default. Output = "1,234.568".
WScript.Echo FormatNumber(a, 3)

' Truncate to three decimal places. Output = "1234.567".
WScript.Echo Left(a, InStr(a, ".") + 3)

' Round to a whole number. Grouping disabled. Output = "1235".
WScript.Echo FormatNumber(a, 0, , , False)

' Use integer portion only and pad with zeroes to fill 8 chars. Output = "00001234".
WScript.Echo Right("00000000" & Int(a), 8)

## Vedit macro language

Vedit only supports integers, but fixed point calculations can be used for decimal values.
The following example uses 3 decimal places (value scaled by 1000). The output is inserted at current edit position.

#1 = 7125
Num_Ins(#1, FILL+COUNT, 9) Char(-3) Ins_Char('.')
Output:
00007.125

## Visual Basic

Works with: Visual Basic version VB6 Standard

Debug.Print Format\$(7.125, "00000.000")

Output (the decimal separator used depends on the system's language settings):

00007.125

## XSLT

<xsl:value-of select="format-number(7.125, '00000000.#############')" />

## zkl

"%09.3f".fmt(7.125)   //-->"00007.125"
"%09.3e".fmt(7.125) //-->"7.125e+00"
"%09.3g".fmt(7.125) //-->"000007.12"
"%09d".fmt(7.125) //-->"000000007"
"%09,d".fmt(78901.125)//-->"00078,901"

## ZX Spectrum Basic

10 LET n=7.125
20 LET width=9
30 GO SUB 1000
40 PRINT AT 10,10;n\$
50 STOP
1000 REM Formatted fixed-length
1010 LET n\$=STR\$ n
1020 FOR i=1 TO width-LEN n\$
1030 LET n\$="0"+n\$
1040 NEXT i
1050 RETURN