# Literals/Integer

(Redirected from Integer literals)

Some programming languages have ways of expressing integer literals in bases other than the normal base ten.

Show how integer literals can be expressed in as many bases as your language allows.

Note:   this should not involve the calling of any functions/methods, but should be interpreted by the compiler or interpreter as an integer written to a given base.

Also show any other ways of expressing literals, e.g. for different types of integers.

## 11l

```print(255)        // decimal literal
print(F'F)        // ultrashort (single-byte) hexadecimal literal
print(377o)       // octal literal
print(1111'1111b) // binary literal
print(255'000)    // decimal literal```
Output:
```255
255
255
255
255
255
255000
```

## 6502 Assembly

Conventions vary between assemblers, but typically a \$ represents hexadecimal and a % represents binary. The absence of either of those symbols means decimal. Single or double quotes represent an ASCII value. Keep in mind that without a # in front, any quantity is interpreted as a dereference operation at the memory location equal to the supplied number, rather than a constant value.

```;These are all equivalent, and each load the constant value 65 into the accumulator.
LDA #\$41
LDA #65
LDA #%01000001
LDA #'A'```

Since all are equivalent, which one you use is entirely up to your preference. It's a good practice to use the representation that conveys the intent and meaning of your data the best.

Negative numbers can be represented by a minus sign. Minus signs only work for decimal numbers, not hexadecimal or binary. The assembler will interpret the negative number using the two's complement method, sign-extending it as necessary to fit the context it was provided in. This typically means that -1 maps to 0xFF, -2 to 0xFE, -3 to 0xFD, and so on. For absolute addresses, -1 gets converted to 0xFFFF, -2 to 0xFFFE, etc.

## 68000 Assembly

Conventions vary between assemblers, but typically a \$ represents hexadecimal and a % represents binary. The absence of either of those symbols means decimal. Single or double quotes represent an ASCII value. Keep in mind that without a # in front, any quantity is interpreted as a dereference operation at the memory location equal to the supplied number, rather than a constant value.

```;These are all equivalent:
MOVE.B #\$41,D0
MOVE.B #65,D0
MOVE.B #%01000001,D0
MOVE.B #'A',D0
```

## 8086 Assembly

Supported integer literals may differ across assemblers. The following work with UASM which is MASM-compatible:

• A "0x" prefix or "h" suffix for hexadecimal.
• A % prefix for binary
• No prefix for base 10
```MOV AX,4C00h
MOV BX,%1111000011110000
MOV CX,0xBEEF
MOV DL,35
```

## AArch64 Assembly

Supported integer literals may differ across assemblers.

GNU assembler supports decimal, binary (prefix 0b), octal (prefix 0), hexadecimal (prefix 0x), and ASCII value of a given character (a single quote followed by an ASCII character, no closing quote).

```.equ STDOUT, 1
.equ SVC_WRITE, 64
.equ SVC_EXIT, 93

.text
.global _start

_start:
stp x29, x30, [sp, -16]!
mov x29, sp
mov x0, #123 // decimal
bl print_uint64
mov x0, #0b01111011 // binary
bl print_uint64
mov x0, #0173 // octal
bl print_uint64
bl print_uint64
mov x0, #'{ // ascii value
bl print_uint64
mov x0, #'\{ // ascii value in another way
bl print_uint64
ldp x29, x30, [sp], 16
mov x0, #0
b _exit // exit(0);

// void print_uint64(uint64_t x) - print an unsigned integer in base 10.
print_uint64:
// x0 = remaining number to convert
// x1 = pointer to most significant digit
// x2 = 10
// x3 = x0 / 10
// x4 = x0 % 10
// compute x0 divmod 10, store a digit, repeat if x0 > 0
ldr x1, =strbuf_end
mov x2, #10
1:	udiv x3, x0, x2
msub x4, x3, x2, x0
mov x0, x3
strb w4, [x1, #-1]!
cbnz x0, 1b
// compute the number of digits to print, then call write()
ldr x3, =strbuf_end_newline
sub x2, x3, x1
mov x0, #STDOUT
b _write

.data
strbuf:
.space 31
strbuf_end:
.ascii "\n"
strbuf_end_newline:
.align 4

.text
//////////////// system call wrappers
// ssize_t _write(int fd, void *buf, size_t count)
_write:
stp x29, x30, [sp, -16]!
mov x8, #SVC_WRITE
mov x29, sp
svc #0
ldp x29, x30, [sp], 16
ret

// void _exit(int retval)
_exit:
mov x8, #SVC_EXIT
svc #0```

In Ada integer literals may have the form <base>#<numeral>#. Here <base> can be from the range 2..16. For example:

```with Ada.Integer_Text_IO;  use Ada.Integer_Text_IO;

procedure Test_Literals is
begin
Put (16#2D7#);
Put (10#727#);
Put (8#1_327#);
Put (2#10_1101_0111#);
end Test_Literals;
```
Output:
```        727        727        727        727
```

## Aime

```if ((727 == 0x2d7) && (727 == 01327)) {
o_text("true\n");
} else {
o_text("false\n");
}```

## ALGOL 68

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
Works with: ELLA ALGOL 68 version Any (with appropriate job cards) - tested with release 1.8-8d

Binary literals are of type BITS, and need to be converted to INT using the operator ABS.

```main:(

SHORT SHORT INT ssdec = SHORT SHORT 727,
sshex = ABS SHORT SHORT 16r2d7,
ssoct = ABS SHORT SHORT 8r1327,
ssbin = ABS SHORT SHORT 2r1011010111;

SHORT INT sdec = SHORT 727,
shex = ABS SHORT 16r2d7,
soct = ABS SHORT 8r1327,
sbin = ABS SHORT 2r1011010111;

INT dec = 727,
hex = ABS 16r2d7,
oct = ABS 8r1327,
bin = ABS 2r1011010111;

LONG INT ldec = LONG 727,
lhex = ABS LONG 16r2d7,
loct = ABS LONG 8r1327,
lbin = ABS LONG 2r1011010111;

CO
LONG LONG INT lldec = LONG LONG 727,
llhex = ABS LONG LONG 16r2d7,
lloct = ABS LONG LONG 8r1327,
llbin = ABS LONG LONG 2r1011010111
# etc ... #
END CO

print(("SHORT SHORT INT:", ssdec, sshex, ssoct, ssbin, new line));
print(("      SHORT INT:", sdec, shex, soct, sbin, new line));
print(("            INT:", dec, hex, oct, bin, new line));
print(("       LONG INT:", ldec, lhex, loct, lbin, new line))
CO LONG LONG INT not supported by ELLA ALGOL 68RS
print(("LONG LONG INT:", new line, lldec, new line, llhex, new line, lloct, new line, llbin, new line))
# etc ... #
END CO

)```

algol68g output:

```SHORT SHORT INT:       +727       +727       +727       +727
SHORT INT:       +727       +727       +727       +727
INT:       +727       +727       +727       +727
LONG INT:                                +727                                +727                                +727                                +727
```

algol68toc output:

```SHORT SHORT INT:  -41  -41  -41  -41
SHORT INT:   +727   +727   +727   +727
INT:        +727        +727        +727        +727
LONG INT:                 +727                 +727                 +727                 +727
```

## ALGOL W

Algol W has only decimal integer literals. Hexadecimal values can be written (prefixed with #) but these are of type "bits" and the standard number function must be used to "convert" them to an integer.

```begin
write( 16, number( #10 ) )
end.```
Output:
```            16              16
```

## AmigaE

```PROC main()
IF (\$2d7 = 727) AND (%001011010111 = 727) THEN WriteF('true\n')
ENDPROC```

## ARM Assembly

Works with: as version Raspberry Pi
```/* ARM assembly Raspberry PI  */
/*  program integer.s   */

/* Constantes    */
.equ STDOUT, 1     @ Linux output console
.equ EXIT,   1     @ Linux syscall
.equ WRITE,  4     @ Linux syscall

/*********************************/
/* Initialized data              */
/*********************************/
.data
iNumberBinaire: .int 0b1100100
iNumberOctal:    .int  0144
iNumberDecimal: .int 100
iNumberHexa:     .int 0x64

szMessResult:  .ascii "Resultat = "      @ message result
sMessValeur:   .fill 12, 1, ' '
.asciz "\n"
/*********************************/
/* UnInitialized data            */
/*********************************/
.bss
/*********************************/
/*  code section                 */
/*********************************/
.text
.global main
main:                @ entry of program
push {fp,lr}      @ saves 2 registers
bl conversion10       @ call function with 2 parameter (r0,r1)
bl affichageMess            @ display message
ldr r0,[r0]
bl conversion10       @ call function with 2 parameter (r0,r1)
bl affichageMess            @ display message
ldr r0,[r0]
bl conversion10       @ call function with 2 parameter (r0,r1)
bl affichageMess            @ display message
ldr r0,[r0]
bl conversion10       @ call function with 2 parameter (r0,r1)
bl affichageMess            @ display message

100:   @ standard end of the program
mov r0, #0                  @ return code
pop {fp,lr}                 @restaur 2 registers
mov r7, #EXIT              @ request to exit program
svc #0                       @ perform the system call

/******************************************************************/
/*     display text with size calculation                         */
/******************************************************************/
/* r0 contains the address of the message */
affichageMess:
push {r0,r1,r2,r7,lr}    			/* save  registres */
mov r2,#0   				/* counter length */
1:      	/* loop length calculation */
ldrb r1,[r0,r2]  			/* read octet start position + index */
cmp r1,#0       			/* if 0 its over */
bne 1b          			/* and loop */
/* so here r2 contains the length of the message */
mov r1,r0        			/* address message in r1 */
mov r0,#STDOUT      		/* code to write to the standard output Linux */
mov r7, #WRITE             /* code call system "write" */
svc #0                      /* call systeme */
pop {r0,r1,r2,r7,lr}    				/* restaur des  2 registres */
bx lr	        			/* return  */
/******************************************************************/
/*     Converting a register to a decimal                                 */
/******************************************************************/
/* r0 contains value and r1 address area   */
conversion10:
push {r1-r4,lr}    /* save registers */
mov r3,r1
mov r2,#10

1:	   @ start loop
bl divisionpar10 @ r0 <- dividende. quotient ->r0 reste -> r1
strb r1,[r3,r2]  @ store digit on area
sub r2,#1         @ previous position
cmp r0,#0         @ stop if quotient = 0 */
bne 1b	          @ else loop
@ and move spaves in first on area
mov r1,#' '   @ space
2:
strb r1,[r3,r2]  @ store space in area
subs r2,#1       @ @ previous position
bge 2b           @ loop if r2 >= zéro

100:
pop {r1-r4,lr}    @ restaur registres
bx lr	          @return
/***************************************************/
/*   division par 10   signé                       */
/* Thanks to http://thinkingeek.com/arm-assembler-raspberry-pi/*
/* and   http://www.hackersdelight.org/            */
/***************************************************/
/* r0 dividende   */
/* r0 quotient */
/* r1 remainder  */
divisionpar10:
/* r0 contains the argument to be divided by 10 */
push {r2-r4}   /* save registers  */
mov r4,r0
ldr r3, .Ls_magic_number_10 /* r1 <- magic_number */
smull r1, r2, r3, r0   /* r1 <- Lower32Bits(r1*r0). r2 <- Upper32Bits(r1*r0) */
mov r2, r2, ASR #2     /* r2 <- r2 >> 2 */
mov r1, r0, LSR #31    /* r1 <- r0 >> 31 */
add r0, r2, r1         /* r0 <- r2 + r1 */
add r2,r0,r0, lsl #2   /* r2 <- r0 * 5 */
sub r1,r4,r2, lsl #1   /* r1 <- r4 - (r2 * 2)  = r4 - (r0 * 10) */
pop {r2-r4}
bx lr                  /* leave function */
.align 4
.Ls_magic_number_10: .word 0x66666667```

## Arturo

```num: 18966

print [num "->" type num]
```
Output:
`18966 -> :integer`

## AutoHotkey

```If (727 == 0x2d7)
MsgBox true
```

## Avail

Avail's built-in lexers recognize "traditional" binary, octal, and hexadecimal prefixes `0b`, `0o`, and `0x` respectively:

```Print: "0b11001101 = " ++ “0b11001101”;
Print: "0o755 = " ++ “0o755”;

Arbitrary integer bases from 2 to 36 are supported with the format digits r base. As additional digit characters are needed, they are taken from the latin alphabet in order.

`Print: "ZZr36 = " ++ “ZZr36”;`

While the task limits examples to those understood by the compiler and "not involve the calling of any functions/methods", the line is not so clear cut in Avail. For example, one could define new lexers to understand new integer formats which are then accepted by the compiler, allowing for an unlimited array of integer literal kinds.

## AWK

Awk has decimal literals, using the digits from 0 to 9. Literals/Floating point#AWK describes the format of these literals.

As an extension to the language, some Awk implementations also have octal or hexadecimal literals. GNU awk (gawk) has both octal and hexadecimal literals, like C. The One True Awk (nawk) only has decimal literals.

Works with: gawk version 3.1.7
```BEGIN {
if ( (0x2d7 == 727) &&
(01327 == 727) ) {
print "true with GNU awk"
}
}
```

nawk parses 01327 as 1327, and parses 0x2d7 as 0 x2d7 (which is the string concatentation of "0" and variable x2d7).

```BEGIN {
x2d7 = "Goodbye, world!"
print 0x2d7  # gawk prints "727", nawk prints "0Goodbye, world!"
print 01327  # gawk prints "727", nawk prints "1327"
}
```

## Axe

In addition to decimal integer literals, Axe supports hexadecimal and binary integers using a leading exponent operator or pi, respectively. Note that the leading E below is the small-caps E.

```123
ᴇFACE
π101010```

## BASIC

&O = octal; &H = hexadecimal. Some flavors of BASIC also support &B = binary, but they're somewhat rare.

```PRINT 17
PRINT &O21
PRINT &H11
```

Output:

```17
17
17```

### BaCon

BaCon allows (as it converts to C) C style integer literals. zero prefix Octal, 0x prefix Hexadecimal, no prefix Decimal, and if supported by the underlying compiler, 0b prefix for Binary. 0x and 0b can be upper case 0X and 0B.

```' literal integers
PRINT 10
PRINT 010
PRINT 0x10
' C compiler dependent, GCC extension
PRINT 0b10
```
Output:
```prompt\$ bacon literal-integer.bac
Converting 'literal-integer.bac'... done, 6 lines were processed in 0.002 seconds.
Compiling 'literal-integer.bac'... cc  -c literal-integer.bac.c
cc -o literal-integer literal-integer.bac.o -lbacon -lm
prompt\$ ./literal-integer
10
8
16
2```

### BASIC256

```print 17
print 0o21              #octal
print 0b10001           #binary

print FromOctal(21)
print FromHex(11)
print FromBinary(10001)
```

### BBC BASIC

```      PRINT 1234 : REM Decimal
PRINT %10011010010 : REM Binary
```

Output:

```      1234
1234
1234
```

### IS-BASIC

```PRINT 17
PRINT BIN(10001)
PRINT ORD(HEX\$("11"))```

### Yabasic

```print 17
print 0b10001    //binary

print dec("11",16)
print dec("10001",2)
```

## bc

Numeric literals use the digits 0-9 and A-F (only the uppercase letters). The minus sign '-' and radix point '.' are optional. When the program encounters a numeric literal, it uses the current value of ibase.

This example shows the literal -727 in all bases from 2 to 16. (It never prints "Impossible!")

```ibase = 2
b = -1011010111
ibase = 11 /* 3 */
b = -222221
ibase = 11 /* 4 */
b = -23113
ibase = 11 /* 5 */
b = -10402
ibase = 11 /* 6 */
b = -3211
ibase = 11 /* 7 */
b = -2056
ibase = 11 /* 8 */
b = -1327
ibase = 11 /* 9 */
b = -887
ibase = 11 /* 10 */
b = -727
ibase = 11 /* 11 */
b = -601
ibase = 11 /* 12 */
b = -507
ibase = 11 /* 13 */
b = -43C
ibase = 11 /* 14 */
b = -39D
ibase = 11 /* 15 */
b = -337
ibase = 11 /* 16 */
b = -2D7

ibase = A
for (i = 2; i <= 16; i++) if (b[i] != -727) "Impossible!
"
quit
```

The digits 0-9 and A-F are valid with all input bases. For example, FF from base 2 is 45 (because 15 * 2 + 15 is 45), and FF from base 10 is 165 (because 15 * 10 + 15 is 45). Most importantly, ibase = A always switches to base ten.

## Befunge

While Befunge doesn't directly support numbers aside from 0-9 (base 10), characters in strings are essentially treated as base-256 numbers.

```" ~"..@
```

Output:

```126 32
```

## BQN

BQN only supports base ten integer literals. There are some things to note, however:

A high minus must be used instead of a plain minus for negative numbers (also a feature of APL):

```¯5
¯3000```

Underscores are ignored in numeric literals in general.

`1_000_000`

## Bracmat

Bracmat only supports specification of numbers in base ten.

## C

Leading 0 means octal, 0x or 0X means hexadecimal. Otherwise, it is just decimal.

```#include <stdio.h>

int main(void)
{
printf("%s\n",
( (727 == 0x2d7) &&
(727 == 01327)    ) ? "true" : "false");

return 0;
}
```

GCC supports specifying integers in binary using the 0b prefix syntax, but it's not standard. Standard C has no way of specifying integers in binary.

To specify a literal of an unsigned integer, you add the suffix "u" or "U". To specify a literal of a "long" integer, you add the suffix "l" or "L". In C99, to specify a literal of a "long long" integer, you add the suffix "ll" or "LL". (The "l" and "ll" forms are discouraged as "l" looks like the digit "1"). The "u" suffixes can be combined with "l" or "ll" suffixes for unsigned long or unsigned long long integers.

## C#

C# has decimal and hexadecimal integer literals, the latter of which are prefixed with `0x`:

```int a = 42;
int b = 0x2a;
```

Literals of either form can be suffixed with `U` and/or `L`. `U` will cause the literal to be interpreted as an unsigned type (necessary for numbers exceeding 231 or hex literals that have a first digit larger than `7`) and `L` signifies the use of a `long` type – using `UL` or `LU` as suffix will then use `ulong`. C# has no syntactic notion of expressing integer literals of smaller types than `Int32`; it is a compile-time error to have an assignment such as

```byte x = 500;
```

Update
As of C#7, integer literals can be written in binary with the prefix `0b`. Furthermore, underscores can be used as separators:

```int x = 0b1100_1001_1111_0000;
```

## C++

The same comments apply as to the C example.

```#include <iostream>

int main()
{
std::cout << ( (727 == 0x2d7) &&
(727 == 01327)     ? "true" : "false")
<< std::endl;

return 0;
}
```

## Clojure

Clojure uses the Java octal (0...) and hexadecimal (0x...) notation; for any other base, nR... is used, 2 <= n <= 36.

```user=> 2r1001
9
user=> 8r64
52
user=> 064
52
user=> 16r4b
75
user=> 0x4b
75
user=>
```

## COBOL

Standard COBOL accepts signed base 10 integer literals, but does allow for BOOLEAN and Hexadecimal alphanumeric literals, that can be treated as numeric values in code.

ACUCOBOL added extensions that allow base-2 (B#), base-8 (O#), base-16 (with both H# and X# prefix) integer literals.

With GnuCOBOL these extensions are allowed by configuration

```prompt\$ cobc -x -cb_conf=acucobol-literals:ok
```
```display B#10 ", " O#01234567 ", " -0123456789 ", "
H#0123456789ABCDEF ", " X#0123456789ABCDEF ", " 1;2;3;4
```
Output:
```2, 342391, 0123456789, 81985529216486895, 81985529216486895, 1234
```

Some characters are removed by the COBOL text manipulation facility, and are allowed in numeric literals. These symbols are stripped out, along with comment lines, before seen by the compiler proper.

```if 1234 = 1,2,3,4 then display "Decimal point is not comma" end-if
if 1234 = 1;2;3;4 then display "literals are equal, semi-colons ignored" end-if
```

Comma is a special case, as COBOL can be compiled with `DECIMAL POINT IS COMMA` in the `CONFIGURATION SECTION`. The 1,2,3,4 comparison test above would cause a compile time syntax error when `DECIMAL POINT IS COMMA` is in effect.

## Comal

```IF 37=\$25 THEN PRINT "True"
IF 37=%00100101 THEN PRINT "True"```

## Common Lisp

(This is an interactive common lisp session)

binary: #b, octal: #o, hexadecimal: #x, any base from 2 to 36: #Nr

```>(= 727 #b1011010111)
T
>(= 727 #o1327)
T
>(= 727 #x2d7)
T
>(= 727 #20r1g7)
T
```

## D

D besides hexadecimal, has also binary base. Additionally you can use _ to separate digits in integer (and FP) literals. Octal number literals are library-based to avoid bugs caused by the leading zero.

```import std.stdio, std.conv;

void main() {
writeln("oct: ", octal!777);
writeln("bin: ", 0b01011010);
writeln("dec: ", 1000000000);
writeln("dec: ", 1_000_000_000);
writeln();

writeln(typeid(typeof(0)));
writeln(typeid(typeof(0u)));
// writeln(typeid(typeof(0l))); // 'l' suffix is deprecated
writeln(typeid(typeof(0L)));
writeln(typeid(typeof(0uL)));
writeln(typeid(typeof(0LU)));
writeln();

}
```
Output:
```oct: 511
bin: 90
hex: 195948557
dec: 1000000000
dec: 1000000000

int
uint
long
ulong
ulong

## DCL

```\$ decimal1 = 123490
\$ decimal2 = %D123490
\$ octal = %O12370
\$ hex = %X1234AF0
```

## Delphi

```const
DEC_VALUE = 256;        // decimal notation
HEX_VALUE = \$100;       // hexadecimal notation
BIN_VALUE = %100000000; // binary notation (since Delphi 10.4 version)
```

## DWScript

DWScript has decimal and hexadecimal integer literals, the latter of which are prefixed with `\$`:

```var a : Integer := 42;
var b : Integer := \$2a;
```

Both notations can also be used for character codes (when prefixed by `#`).

## Dyalect

Dyalect has decimal and hexadecimal integer literals, the latter of which are prefixed with 0x:

```var a = 42
var b = 0x2a```

## Dylan

```42        // a decimal integer
#o52      // an octal integer
#b101010  // a binary integer
```

## E

```? 256
# value: 256

? 0x100
# value: 256

? 0123
# syntax error: Octal is no longer supported: 0123```

## EasyLang

EasyLang's ability to use hexadecimal literals is undocumented.

```decimal = 57
print decimal
Output:
```57
57
```

## Efene

```@public
run = fn () {
io.format("0xff  : ~B~n", [0xff])
io.format("0xFF  : ~B~n", [0xFF])
io.format("0o777 : ~B~n", [0o777])
io.format("0b1011: ~B~n", [0b1011])
}```

## Eiffel

Integer literals can be specified in decimal, hexadecimal, octal and binary. Only decimal literals can have an optional sign. Underscores may also be used as separators, but cannot begin or end the literal. Literals are case insensitive.
```123		-- decimal
-1_2_3		-- decimal
0c173		-- octal
0b111_1011	-- binary
```
Literals are by default interpreted as type INTEGER, where INTEGER is a synonym for either INTEGER_32 or INTEGER_64 (depending on the compiler option) but can be explicitly converted to another type.
```{NATURAL_8}	255
{INTEGER_64}	2_147_483_648
```

## Elena

```   var n := 1234; // decimal number
var x := 1234h; // hexadecimal number```

## Elixir

```1234            #=> 1234
1_000_000       #=> 1000000
0010            #=> 10
0b111           #=> 7
0o10            #=> 8
0x1f            #=> 31

0B10            #=> syntax error before: B10
0X10            #=> syntax error before: X10
0xFF            #=> 255
```

## Emacs Lisp

```123      ;; decimal           all Emacs
#b101    ;; binary            Emacs 21 up, XEmacs 21
#o77     ;; octal             Emacs 21 up, XEmacs 21
#xFF     ;; hex               Emacs 21 up, XEmacs 21
#3r210   ;; any radix 2-36    Emacs 21 up (but not XEmacs 21.4)
```

The digits and the radix character can both be any mixture of upper and lower case. See GNU Elisp reference manual "Integer Basics".

## EMal

```^|
| EMal internally uses 64 bit signed integers.
|^
int hex = 0xff # base16
int oct = 0o377 # base8
int bin = 0b11111111 # base2
int dec = 255 # base10
writeLine(hex)
writeLine(oct)
writeLine(bin)
writeLine(dec)
# here we check that they give the same value
writeLine(0b1011010111 == 0o1327 and
0o1327 == 0x2d7 and
0x2d7 == 727 and
727 == 0b1011010111)```
Output:
```255
255
255
255
⊤
```

## Erlang

Erlang allows integer literals in bases 2 through 36. The format is Base#Number. For bases greater than 10, the values 10-35 are represented by A-Z or a-z.

```> 2#101.
5
> 101.
101
> 16#F.
15
> 36#3z.
143
```

## ERRE

% = binary, & = octal; \$ = hexadecimal.

```PRINT(17)
PRINT(&21)
PRINT(\$11)
PRINT(%1001)```

Output:

```17
17
17
17```

## Euphoria

```printf(1,"Decimal:\t%d, %d, %d, %d\n",{-10,10,16,64})
printf(1,"Hex:\t%x, %x, %x, %x\n",{-10,10,16,64})
printf(1,"Octal:\t%o, %o, %o, %o\n",{-10,10,16,64})
printf(1,"Exponential:\t%e, %e, %e, %e\n",{-10,10,16,64.12})
printf(1,"Floating Point\t%3.3f, %3.3f, %+3.3f\n",{-10,10.2,16.25,64.12625})
printf(1,"Floating Point or Exponential:  %g, %g, %g, %g\n",{10,16,64,123456789.123})```
Output:
```Decimal:    -10, 10, 16, 64
Hex:    FFFFFFFFFFFFFFF6, A, 10, 40
Octal:  1777777777777777777766, 12, 20, 100
Exponential:    -1.000000e+001, 1.000000e+001, 1.600000e+001, 6.412000e+001
Floating Point  -10.000, 10.000, +16.250, 64.126
Floating Point or Exponential:  10, 16, 64, 1.23457e+008
```

## F#

### Base prefixes

Binary numbers begin with 0b, octal numbers with 0o, and hexadecimal numbers with 0x. The hexadecimal digits A-F may be in any case.

```0b101 // = 5
0o12  // = 10
0xF   // = 16
```

### Type suffixes

Most type suffixes can be preceded with a 'u', which indicates the type is unisgned.

```10y  // 8-bit
'g'B // Character literals can be turned into unsigned 8-bit literals
10s  // 16-bit
10l  // 32-bit (suffix is optional)
10L  // 64-bit
10I  // Bigint (cannot be preceded by a 'u')

10un // Unsigned native int (used to represent pointers)
```

## Factor

```10 . ! decimal
0b10 . ! binary
-0o10 . ! octal
```
Output:
```10
2
-8
16
```

Factor also supports the arbitrary use of commas in integer literals:

```1,234,567 .
1,23,4,567 .
```
Output:
```1234567
1234567
```

## Fennel

```;; Fennel, like Lua, supports base 10 and hex literals (with a leading 0x).
1234      ;1234
0x1234    ;4660

;; Optionally, underscores can be used to split numbers into readable chunks.
123_456_789    ;123456789
0x1234_5678    ;305419896
```

## Forth

The standard method for entering numbers of a particular base is to set the user variable BASE to the desired radix from 2 to 36. There are also convenience words for setting the base to DECIMAL and HEX.

```HEX
FEEDFACE
2 BASE !
1011001
DECIMAL
1234
: mask  var @ [ base @ hex ] 3fff and [ base ! ] var ! ;
```

The Forth numeric parser will look for symbols embedded within the stream of digits to determine whether to interpret it as a single cell, double cell, or floating point literal ('e').

```1234   ( n )
123.4  ( l h )
123e4  ( F: n )
```

### Base prefixes

Works with: GNU Forth

In addition, many Forths have extensions for using a prefix to temporarily override BASE when entering an integer literal. These are the prefixes supported by GNU Forth.

```\$feedface   \ hexadecimal
&1234       \ decimal
%1001101    \ binary
'a          \ base 256  (ASCII literal)
```

Some Forths also support "0xABCD" hex literals for compatibility with C-like languages.

## Fortran

```program IntegerLiteral

implicit none
integer, parameter   :: dec = 727
integer, parameter   :: hex = Z'2d7'
integer, parameter   :: oct = O'1327'
integer, parameter   :: bin = B'1011010111'

print *, dec, hex, oct, bin

end program IntegerLiteral
```

Outputs:

```         727         727         727         727
```

## FreeBASIC

```' FB 1.05.0 Win64

' The following all print 64 to the console

' integer literals of unspecified type - actual type is inferred from size or context (8, 16, 32 or 64 bit signed/unsigned)
Print 64        '' Decimal literal
Print &O100     '' Octal Literal
Print &B1000000 '' Binary literal

' integer literals of specific types
' Integer type is 4 bytes on 32 bit and 8 bytes on 64 bit platform
Print 64%       '' Decimal signed 4/8 byte integer (Integer)
Print 64L       '' Decimal signed 4 byte integer   (Long)
Print 64&       '' Decimal signed 4 byte integer   (Long) - alternative suffix
Print 64LL      '' Decimal unsigned 4 byte integer (ULong)
Print 64LL      '' Decimal signed 8 byte integer   (LongInt)
Print 64ULL     '' Decimal unsigned 8 byte integer (ULongInt)

Sleep
```

## Frink

Bases from 2 to 36 are allowed in Frink. All literals can be arbitrarily large. Frink does not subscribe to the insanity that a leading 0 implies octal.

```123456789123456789               // (a number in base 10)
123_456_789_123_456_789          // (the same number in base 10 with underscores for readability)
1 quadrillion                    // (named numbers are fine in Frink.)
1ee39                            // (exact exponent, an integer with exact value 10^39)
6.02214076ee23                   // (exact exponent, Avogadro's number now defined as the exact integer 602214076000000000000000 )
100001000101111111101101\\2      // (a number in base 2)
1000_0100_0101_1111_1110_1101\\2 // (a number in base 2 with underscores for readability)
845FED\\16                       // (a number in base 16... bases from 2 to 36 are allowed)
845fed\\16                       // (The same number in base 16... upper or lowercase are allowed.)
845_fed\\16                      // (a number in base 16 with underscores for readability)
FrinkRulesYou\\36                // (a number in base 36)
0b100001000101111111101101       // (Common binary notation)
0b1000_0100_0101_1111_1110_1101  // (Binary with underscores for readability)```

## FutureBasic

```window 1

printf @"     Decimal: %ld", 100
printf @"       Octal: %o",  100
print  @"      Binary: ";  bin\$(100)

HandleEvents```

Output:

```     Decimal: 100
Octal: 144
Binary: 00000000000000000000000001100100
```

## GAP

```# Only decimal integers, but of any length
31415926
1606938044258990275541962092341162602522202993782792835301376
```

## Go

For integer literals, octal is represented by a leading `0` or the prefix `0o`. `0x` or `0X` means hexadecimal. `0b` or `0B` is binary. Otherwise, it is just decimal.

Character literals though, also specify integer values. Go source is specified to be UTF-8 encoded. The value of a character literal is the Unicode value of the UTF-8 encoded character.

There is no size or type specification with an integer literal, they are of arbitrary precision and do not overflow (compilers are required to represent integer constants with at least 256 bits and give an error if unable to represent an integer constant precisely). Constant expressions are evaluated at compile time at an arbitrary precision. It is only when a constant is assigned to a variable that it is given a type and an error produced if the constant value cannot be represented as a value of the respective type.

```package main

import "fmt"

func main() {
fmt.Println(727 == 0x2d7)         // prints true
fmt.Println(727 == 01327)         // prints true
fmt.Println(727 == 0b10110_10111) // prints true
fmt.Println(727 == '˗')           // prints true
}
```

## Groovy

Solution:

```println 025    // octal
println 25     // decimal integer
println 25l    // decimal long
println 25g    // decimal BigInteger
```

Output:

```21
25
25
25
37```

## Harbour

Hexademical integer literals are supported - the leading symbols must be 0x or 0X:

```? 0x1f
```

Output:

`31`

(This is an interactive ghci session)

```Prelude> 727 == 0o1327
True
Prelude> 727 == 0x2d7
True
```

## hexiscript

```# All equal to 15
println 15
println 000015 # Leading zeros are ignored
println 0b1111
println 0o17
println 0xf```

## HicEst

HicEst only supports decimal integer literals.

## HolyC

HolyC supports various integer sizes.

```U8 i; // 8 bit integer
U16 i; // 16 bit integer
U32 i; // 32 bit integer
U64 i; // 64 bit integer```

```U16 i = 727; // decimal
U16 i = 0x2d7; // hexadecimal```

## Icon and Unicon

Icon/Unicon supports digit literals of the form <base>r<value> with base being from 2-36 and the digits being from 0..9 and a..z.

```procedure main()
L := [1, 2r10, 3r10, 4r10, 5r10, 6r10, 7r10, 8r10, 9r10, 10r10, 11r10, 12r10, 13r10, 14r10,
15r10, 16r10, 17r10, 18r10,19r10, 20r10, 21r10, 22r10, 23r10, 24r10, 25r10, 26r10, 27r10,
28r10, 29r10, 30r10, 31r10, 32r10, 33r10, 34r10, 35r10, 36r10]

every write(!L)
end
```

## J

J's numeric mini-language allows spaces, underlines, dots and lower case alphabetic characters in its numeric literals.

Arbitrary base numbers begin with a base ten literal (which represents the base of this number), and then the letter 'b' and then an arbitrary sequence of digits and letters which represents the number in that base. Letters a..z represent digits in the range 10..35. Each numeric item in a numeric constant must have its base specified independently.

```   10b123 16b123 8b123 20b123 2b123 1b123 0b123 100b123 99 0 0bsilliness
1
123 291 83 443 11 6 3 10203 99 0 1 28
```

This may be used to enter hexadecimal or octal or binary numbers. However, note also that J's primitives support a variety of binary operations on numbers represented as sequences of 0s and 1s, like this:

```0 1 0 0 0 1 0 0 0 1 1 1 1
```

J also supports extended precision integers, if one member of a list ends with an 'x' when they are parsed. Extended precision literals can not be combined, in the same constant, with arbitrary base literals. (The notation supports no way of indicating that extra precision in an arbitrary base literal should be preserved and the extra complexity to let this attribute bleed from any member of a list to any other member was deemed not worth implementing.)

```   123456789123456789123456789 100000000000x
123456789123456789123456789 100000000000

16b100 10x
|ill-formed number
```

J also allows integers to be entered using other notations, such as scientific or rational.

```   1e2 100r5
100 20
```

Internally, J freely converts fixed precision integers to floating point numbers when they overflow, and numbers (including integers) of any type may be combined using any operation where they would individually be valid arguments.

Internally, J represents numeric constants in their simplest type, regardless of how they were specified. In other words 9r1, although it is "specified as a rational" is represented as an extended precision integer. Similarly, 2.0, although it is "specified as a floating point value" is represented as an integer, and 1.0 is represented as a boolean.

That said, note that "type" is a property of the array, and not a property of the value. And, code that modifies the structure of an array leaves its type alone. So, if you need an array of a type different than that specified by J's "simplest type for constants" rule, you can extract the constant you need from an array which contains it and has the type you need. For example `{.1 2` would give you an integer 1 instead of a boolean 1.

## Java

A leading 0 means octal, 0x or 0X means hexadecimal. Otherwise, it is just decimal.

```public class IntegerLiterals {
public static void main(String[] args) {
System.out.println( 727 == 0x2d7 &&
727 == 01327   );
}
}
```

You may also specify a long literal by adding an l or L (uppercase is preferred as the lowercase looks like a "1" in some fonts) to the end (ex: long a = 574298540721727L). This is required for numbers that are too large to be expressed as an int.

Works with: Java version 7

Java 7 has added binary literals to the language. A leading 0b means binary. You may also use underscores as separators in all bases.

```public class BinaryLiteral {
public static void main(String[] args) {
System.out.println( 727 == 0b10_1101_0111 );
}
}
```

## JavaScript

```if ( 727 == 0x2d7 &&
727 == 01327 )
```

## jq

jq only supports JSON data types, and thus the only supported integer literals are decimals, which may, however, be expressed using digits in the conventional way, or using the "e" notation, e.g. 10 == 1e1. Other ways to express 10 include 1e+1, 10e0, 10E-0, etc.

## Julia

Julia has binary, octal and hexadecimal literals. We check that they give the same value.

```julia> 0b1011010111 == 0o1327 == 0x2d7 == 727
true
```

## Kotlin

Kotlin supports 3 types of integer literal: decimal, hexadecimal and binary. Hexadecimal literals are prefixed with `0x` or `0X`, and binary literals with `0b` or `0B`. Hexadecimal digits can be uppercase or lowercase, or a combination of the two.

A signed integer literal can be assigned to a variable of any signed integer type. If no type is specified, Int (4 bytes) is assumed. If the value cannot fit into an Int, Long (8 bytes) is assumed.

An unsigned integer literal is made by appending `u` or `U` to a signed integer literal. Unsigned literals can be assigned to any unsigned integer type, with UInt (4 bytes) being assumed if none is specified, or ULong (8 bytes) if the value cannot fit into a UInt.

Signed and unsigned integer literals can be forced to be interpreted as Long or ULong respectively by appending the suffix `L` to the literal (lower case 'l' is not allowed as it is easily confused with the digit '1').

Underscores can be used between digits of a literal for clarity.

```fun main() {
// signed integer literals
val d = 255                // decimal
val h = 0xff               // hexadecimal (can use 0X instead of 0x)
val b = 0b11111111         // binary (can use 0B instead of 0b)

// signed long integer literals (cannot use l instead of L)
val ld = 255L              // decimal
val lh = 0xffL             // hexadecimal
val lb = 0b11111111L       // binary

// unsigned integer literals (can use U instead of u)
val ud = 255u              // decimal
val uh = 0xffu             // hexadecimal
val ub = 0b11111111u       // binary

// unsigned long integer literals (can use U instead of u)
val uld = 255uL             // decimal
val ulh = 0xffuL            // hexadecimal
val ulb = 0b11111111uL      // binary

// implicit conversions
val ld2 = 2147483648        // decimal signed integer literal automatically converted to Long since it cannot fit into an Int
val ush : UShort = 0x7fu    // hexadecimal unsigned integer literal automatically converted to UShort
val bd : Byte  = 0b01111111 // binary signed integer literal automatically converted to Byte

println("\$d \$h \$b \$ud \$uh \$ub \$ld \$lh \$lb \$uld \$ulh \$ulb \$ld2 \$ush \$bd")
}
```
Output:
```255 255 255 255 255 255 255 255 255 255 255 255 2147483648 127 127
```

```42
0x2a
```

## Limbo

Integer literals in Limbo can be written in any base from 2 to 36 by putting the base (or radix), then 'r' or 'R', and the digits of the number. If no base is explicitly given then the number will be in base 10.

```implement Command;

include "sys.m";
sys: Sys;

include "draw.m";

include "sh.m";

init(nil: ref Draw->Context, nil: list of string)
{

sys->print("%d\n", 2r1111); # binary
sys->print("%d\n", 8r17);   # octal
sys->print("%d\n", 15);     # decimal
}
```

## LiveCode

LiveCode supports hexadecimal literals, and if "convertOctals" is set to true, then integer literals with leading zeroes are interpreted as octal and not base 10.

Hex example
`put 0x1 + 0xff`

## Logo

Logo only supports decimal integer literals.

## Logtalk

Built-in support for bases 2, 8, 10, and 16:

```:- object(integers).

:- public(show/0).

show :-
write('Binary      0b11110101101 = '), write(0b11110101101), nl,
write('Octal       0o3655 =        '), write(0o3655), nl,
write('Decimal     1965 =          '), write(1965), nl,

:- end_object.
```

Sample output:

```| ?- integers::show.
Binary      0b11110101101 = 1965
Octal       0o3655 =        1965
Decimal     1965 =          1965
yes
```

## Lua

Lua supports either base ten or hex

```45, 0x45
```

## M2000 Interpreter

```Def ExpType\$(x)=Type\$(x)
Print ExpType\$(12345678912345#)="Currency", 12345678912345#
Print ExpType\$(123456789123456789123456@)="Decimal", 123456789123456789123456@
Print ExpType\$(12&)="Long", 12&, 0xFFFFFFFF&=-1
Print ExpType\$(12%)="Integer", 12%, 0xFFFF%=-1
\\ used for unsigned integers (but it is double)
Print ExpType\$(0xFFFFFFFF)="Double", 0xFFFFFFFF=4294967295```

## M4

m4 has decimal, octal and hexadecimal literals like C.

```eval(10)        # base 10
eval(010)       # base 8
eval(0x10)      # base 16```
Output:
```10        # base 10
8       # base 8
16      # base 16```

As an extension, GNU m4 provides "0b" and "0r" literals.

Works with: GNU m4
```eval(0b10)      # base 2
eval(`0r2:10')  # base 2
...
eval(`0r36:10') # base 36```
Output:
```2      # base 2
2  # base 2
...
36 # base 36```

## Mathematica/Wolfram Language

```b^^nnnn is a valid number in base b (with b ranging from 2 to 36) :
2^^1011
-> 11

36^^1011
-> 46693
```

## MATLAB / Octave

Matlab uses only base 10 integers.

```> 11
ans =  11
```

Octave allows also a hexadecimal representation

```> 0x11
ans =  17
```

Other representation of other bases need to be converted by functions

```hex2dec(s)
bin2dec(s)
base2dec(s,base)
```

Different integer types can be defined by casting.

```int8(8)
uint8(8)
int16(8)
uint16(8)
int32(8)
uint32(8)
int64(8)
uint64(8)
```

## Maxima

```/* Maxima has integers of arbitrary length */
170141183460469231731687303715884105727
```

## Mercury

```Bin = 0b010101,
Octal = 0o666,
Hex = 0x1fa,
CharCode = 0'a.```

An integer is either a decimal, binary, octal, hexadecimal, or character-code literal. A decimal literal is any sequence of decimal digits. A binary literal is 0b followed by any sequence of binary digits. An octal literal is 0o followed by any sequence of octal digits. A hexadecimal literal is 0x followed by any sequence of hexadecimal digits. A character-code literal is 0' followed by any single character.

## Metafont

```num1 := oct"100";
num2 := hex"100";```

Metafont numbers can't be greater than 4096, so that the maximum octal and hexadecimal legal values are 7777 and FFF respectively. To be honest, "100" is a string, and oct is an "internal" "macro"; but this is the way Metafont specifies numbers in base 8 and 16.

## MIPS Assembly

This ultimately depends on the assembler you're using.

Works with: [ARMIPS]

Hexadecimal numbers are prefixed with 0x, binary with 0b. A number with no prefix is decimal.

If fewer than the maximum number of digits is specified, the number is padded with zeroes to fill the declared space.

`.byte` is 8-bit, `.halfword` is 16-bit, and `.word` is 32-bit.

The endianness of your CPU determines what order the bytes are actually stored in. Bytes are always stored in the order they are declared, but words and halfwords will be endian-swapped if you are assembling for a little-endian MIPS CPU such as the PlayStation 1. On a big-endian MIPS CPU (e.g. Nintendo 64), words and halfwords are assembled as-is.

You can have multiple declarations on the same line separated by commas, and if you do, you only need to specify the data type once for that entire line. (Everything in that line is understood to be the same data type.) Or, you can put each on its own line with the data type declaration in front of each. Either way, the memory layout of the declared literals is the same. How you present the data in your source code is up to you, so it's best to display it in a way that maximizes readability and communicates your intent.

```.word 0xDEADBEEF
.byte 0b00000000,0b11111111,0,255
.halfword 0xCAFE,0xBABE```

A minus sign can be used to indicate a negative number. Negative number literals are sign-extended to fit whatever operand size matches the context.

```addi \$t0,-1  ;assembled the same as "addi \$t0,0xFFFF"
li \$t0,-2               ;assembled the same as "li \$t0,0xFFFFFFFE"```

## Modula-3

All numbers 2 to 16 are allowed to be bases.

```MODULE Literals EXPORTS Main;

IMPORT IO;

BEGIN
IO.PutInt(16_2D7);
IO.Put(" ");
IO.PutInt(10_727);
IO.Put(" ");
IO.PutInt(8_1327);
IO.Put(" ");
IO.PutInt(2_1011010111);
IO.Put("\n");
END Literals.
```

## Neko

Neko supports base 10 and 0x prefixed base 16 integer literals. Leading zero is NOT octal.

```/**
Integer literals, in Neko
Base 10 and Base 16, no leading zero octal in Neko
*/

var num = 2730
if (num == 02730) \$print("base 10, even with leading zero\n")
if (num == 0xAAA) \$print("base 16, with leading 0x or 0X\n")
```

## Nemerle

```42                            // integer literal
1_000_000                     // _ can be used for readability
0o52                          // octal integer literal
0b101010                      // binary integer literal
10u                           // unsigned int
10b, 10sb, 10bs               // signed byte
10ub, 10bu                    // unsigned byte
10L                           // long
10UL, 10LU                    // unsigned long
```

```<decimal_literal> ::=
[ <prefix> ] <digits> [ { '_' <digits> } ] [ <suffix> ]
<prefix> ::=
'0x'
|   '0o'
|   '0b'
<digits> ::=
{ <decimal_digit> }
<suffix> ::=
'b'
|   'sb'
|   'ub'
|   's'
|   'us'
|   'u'
|   'l'
|   'lu'```

## NetRexx

Along with decimal notation NetRexx accepts numeric literals in hexadecimal and binary formats.

The NetRexx documentation describes hexadecimal and binary literal symbol notation in more detail; a summary follows:

A hexadecimal numeric symbol describes a whole number, and is of the form nXstring where, n is a simple number which describes the effective length of the hexadecimal string and string is a string of one or more hexadecimal characters.

A binary numeric symbol describes a whole number using the same rules, except that the identifying character is B or b, and the digits of string must be either 0 or 1, each representing a single bit.

```/* NetRexx */
options replace format comments java crossref symbols

iv =                   8; say                   '8'.right(20) '==' iv.right(8) --     8
iv =                  -8; say                  '-8'.right(20) '==' iv.right(8) --    -8
iv =                 1x8; say                 '1x8'.right(20) '==' iv.right(8) --    -8
iv =                 2x8; say                 '2x8'.right(20) '==' iv.right(8) --     8
iv =                2x08; say                '2x08'.right(20) '==' iv.right(8) --     8
iv =                0x08; say                '0x08'.right(20) '==' iv.right(8) --     8
iv =                0x10; say                '0x10'.right(20) '==' iv.right(8) --    16
iv =                0x81; say                '0x81'.right(20) '==' iv.right(8) --   129
iv =                2x81; say                '2x81'.right(20) '==' iv.right(8) --  -127
iv =                3x81; say                '3x81'.right(20) '==' iv.right(8) --   129
iv =                4x81; say                '4x81'.right(20) '==' iv.right(8) --   129
iv =               04x81; say               '04x81'.right(20) '==' iv.right(8) --   129
iv =               16x81; say               '16x81'.right(20) '==' iv.right(8) --   129
iv =              4xF081; say              '4xF081'.right(20) '==' iv.right(8) -- -3967
iv =              8xF081; say              '8xF081'.right(20) '==' iv.right(8) -- 61569
iv =              0Xf081; say              '0Xf081'.right(20) '==' iv.right(8) -- 61569
iv =              0xffff; say              '0xffff'.right(20) '==' iv.right(8) -- 65535
iv =              4xffff; say              '4xffff'.right(20) '==' iv.right(8) --    -1
iv =              8xffff; say              '8xffff'.right(20) '==' iv.right(8) -- 65535
iv =                 1b0; say                 '1b0'.right(20) '==' iv.right(8) --     0
iv =                 1b1; say                 '1b1'.right(20) '==' iv.right(8) --    -1
iv =                 2b1; say                 '2b1'.right(20) '==' iv.right(8) --     1
iv =                0b10; say                '0b10'.right(20) '==' iv.right(8) --     2
iv =                2b10; say                '2b10'.right(20) '==' iv.right(8) --    -2
iv =                3b10; say                '3b10'.right(20) '==' iv.right(8) --     2
iv =               0b100; say               '0b100'.right(20) '==' iv.right(8) --     4
iv =               3b100; say               '3b100'.right(20) '==' iv.right(8) --    -4
iv =               4b100; say               '4b100'.right(20) '==' iv.right(8) --     4
iv =              4b1000; say              '4b1000'.right(20) '==' iv.right(8) --    -8
iv =              8B1000; say              '8B1000'.right(20) '==' iv.right(8) --     8
iv = 00B1111111111111111; say '00B1111111111111111'.right(20) '==' iv.right(8) -- 65535
iv = 16B1111111111111111; say '16B1111111111111111'.right(20) '==' iv.right(8) --    -1
iv = 32B1111111111111111; say '32B1111111111111111'.right(20) '==' iv.right(8) -- 65535

return
```

Output:

```                   8 ==        8
-8 ==       -8
1x8 ==       -8
2x8 ==        8
2x08 ==        8
0x08 ==        8
0x10 ==       16
0x81 ==      129
2x81 ==     -127
3x81 ==      129
4x81 ==      129
04x81 ==      129
16x81 ==      129
4xF081 ==    -3967
8xF081 ==    61569
0Xf081 ==    61569
0xffff ==    65535
4xffff ==       -1
8xffff ==    65535
1b0 ==        0
1b1 ==       -1
2b1 ==        1
0b10 ==        2
2b10 ==       -2
3b10 ==        2
0b100 ==        4
3b100 ==       -4
4b100 ==        4
4b1000 ==       -8
8B1000 ==        8
00B1111111111111111 ==    65535
16B1111111111111111 ==       -1
32B1111111111111111 ==    65535
```

## Nim

```var x: int
x = 0b1011010111
x = 0b10_1101_0111
x = 0o1327
x = 0o13_27
x = 727
x = 727_000_000
x = 0x2d7
x = 0x2d7_2d7

# Literals of specific size:
var a = -127'i8 # 8 bit Integer
var b = -128'i16
var c = -129'i32
var d = -129'i64
var e = 126'u # Unsigned Integer
var f = 127'u8 # 8 bit uint
var g = 128'u16
var h = 129'u32
var i = 130'u64
```

## Objeck

As of v1.1, Objeck only supports hexadecimal and decimal literals.

```bundle Default {
class Literal {
function : Main(args : String[]) ~ Nil {
(727 = 0x2d7)->PrintLine();
}
}
}```

## OCaml

(This is an interactive ocaml session)

```# 727 = 0b1011010111;;
- : bool = true
# 727 = 0o1327;;
- : bool = true
# 727 = 0x2d7;;
- : bool = true
# 12345 = 12_345 (* underscores are ignored; useful for keeping track of places *);;
- : bool = true
```

Literals for the other built-in integer types:

• 727l - int32
• 727L - int64
• 727n - nativeint

## Oforth

Integers can be expressed into base 10 (default), base 16 (using 0x prefix) or base 2 (using 0b prefix).

Those prefixes can be used for arbitrary precision integers :

Output:
```>0b100000000000000000000000000 println
67108864
ok
>0xFFFFFFFFFFFFFFFFFFFFFFFFFFF println
324518553658426726783156020576255
ok
```

## Oz

To demonstrate the different numerical bases, we unify the identical values:

```try
0b1011010111 = 01327 = 727 = 0x2d7
{Show success}
catch _ then
{Show unexpectedError}
end```

`X = ~42`

## PARI/GP

GP allows input in binary `0b11` and hexadecimal `0xff`. PARI of course supports precisely those bases supported by C.

## Pascal

See Delphi

FreePascal also supports:

```const

DEC_VALUE    =    15;
HEX_VALUE    =    \$F;
OCTAL_VALUE  =  &017;
BINARY_VALUE = %1111;
```

## Perl

```print "true\n" if ( 727 == 0x2d7 &&
727 == 01327 &&
727 == 0b1011010111 &&
12345 == 12_345   # underscores are ignored; useful for keeping track of places
);
```

## Phix

Library: Phix/basics

Phix supports more bases and number formats than average. Standard decimals and hexadecimals are eg 255=#FF. For hexadecimal numbers you can use upper or lower case for digits above 9 (A..F or a..f).
Phix also supports 0b01, 0o07, (0t07,) 0d09, and 0x0F for binary, octal, (octal,) decimal, and hexadecimal values. (The only difference between 0o07 and 0t07 is personal preference.) There is no difference whatsoever between 1 and 1.0.
Given the need for 2, 8, 10, and 16, rather than four routines I wrote one that could handle all of them, and trivially extended it to cope up to base 36. Thus Phix (also) allows any base between 2 and 36, using the notation o(<base>)digits, eg o(7)16 is the base 7 representation of the decimal 13 (ie 1*7^1 + 6*7^0). Phix does not however support "leading 0 is octal", or "trailing h is hex" or any other trailing qualifiers. There is also a specialist "bytewise octal" that I personally wanted for x86 opcodes/listing files, eg 0ob377377377377==#FFFFFFFF.
An integer literal representing a character code can also be expressed by surrounding the character with single quotes, for example the statement `for i='A' to 'Z'` is/behaves exactly the same as `for i=65 to 90`.
Elements (8-bit characters) of an ansi string can likewise be treated as integers. Strings representing a number can/must be converted using eg scanf().
In the 32-bit version, integers outside -1,073,741,824 to +1,073,741,823 must be stored as atoms, which [ie a 64-bit float] can (accurately) store integers up to 9,007,199,254,740,992: between 9,007,199,254,740,992 and 18,014,398,509,481,984 you can only store even numbers, and between 18,014,398,509,481,984 and 36,028,797,018,963,968, you can only store numbers divisible by 4, and so on. (ie as you need more and more bits on the front, eventually bits must start falling off the end)
In the 64-bit version the limits of integers are -4,611,686,018,427,387,904 to +4,611,686,018,427,387,903.
The included mpfr/gmp library allows working with extremely large integers with arbitrary precision, very efficiently.

```?{65,#41,'A',scanf("55","%d"),0o10,0(7)11}
```
Output:
```{65,65,65,{{55}},8,8}
```

## PHP

```<?php
if (727 == 0x2d7 &&
727 == 01327) {
echo "true\n";
}

\$a = 1234; // decimal number
\$a = 0123; // octal number (equivalent to 83 decimal)
\$a = 0x1A; // hexadecimal number (equivalent to 26 decimal)
\$a = 0b11111111; // binary number (equivalent to 255 decimal)
\$a = 1_234_567; // decimal number (as of PHP 7.4.0)
```

## Picat

All output are in base 10.

```% All outputs are in base 10
main =>
println(100),                                % plain integer
println(1_234_567_890),                      % underscores can be used for clarity
println(1_000_000_000_070_000_030_000_001),  % arbitrary precision
nl,

println(0xBe_ad_ed_83),                      % lower or upper case are the same
nl,

println(0o666),                              % Octal
println(0o555_666_777),
nl,

println(0b1111111111111),                    % binary
println(0b1011_1111_1110)```
Output:
```1234567890
1000000000070000030000001

68284
3199069571

438
95907327

8191
3070```

## PicoLisp

In the strict sense of this task, PicoLisp reads only integers at bases which are a power of ten (scaled fixpoint numbers). This is controlled via the global variable '*Scl':

```: (setq *Scl 4)
-> 4

: 123.456789
-> 1234568```

However, the reader is normally augmented by read macros, which can read any base or any desired format. Read macros are not executed at runtime, but intially when the sources are read.

```: '(a `(hex "7F") b `(oct "377") c)
-> (a 127 b 255 c)```

In addition to standard formats like 'hex' (hexadecimal) and 'oct' (octal), there are also more esoteric formats like 'fmt64' (base 64) and 'hax' (hexadecimal numbers coded with alphabetic characters).

## PL/I

```12345
'b4'xn           /* a hexadecimal literal integer.            */
1101b             /* a binary integer, of value decimal 13.   */```

## Plain English

Plain English has two types of numerical literals. The first is the ordinary "number literal", which is expressed in base ten.

```12345
-12345 \ with a negative sign
+12345 \ with a positive sign
```

The second is the "nibble literal", which is a dollar sign followed by a hexadecimal literal.

```\$12345DEADBEEF
```

Numerical literals can also be embedded into "ratio" or "mixed literals".

```123/456 \ ratio literal
1-2/3 \ mixed literal
```

## PostScript

Integer literals in PostScript can be either standard decimal literals or in the form base`#`number. base can be any decimal integer between 2 and 36, number can then use digits from `0` to base − 1. Digits above `9` are replaced by `A` through `Z` and case does not matter.

```123      % 123
8#1777   % 1023
16#FFFE  % 65534
2#11011  % 27
5#44     % 24
```

## PowerShell

PowerShell only supports base 10 and 16 directly:

```727     # base 10
0x2d7   # base 16
```

Furthermore there are special suffices which treat the integer as a multiple of a specific power of two, intended to simplify file size operations:

```3KB  # 3072
3MB  # 3145728
3GB  # 3221225472
3TB  # 3298534883328
```

A number can be suffixed with `d` to make it a `decimal`. This doesn't work in conjunction with above suffixes, though:

```PS> 4d.GetType().ToString()
System.Decimal```

## PureBasic

PureBasic allows integer literals to be specified in base 10, base 2 by using the prefix '%', or base 16 by using the prefix '\$'.

```x = 15     ;15 in base 10
x = %1111  ;15 in base 2
x = \$f     ;15 in base 16
```

An integer literal representing a character code can also be expressed by surrounding the character with single quotes. More than one character can be included in the single quotes (i.e. 'abc'). Depending on whether code is compiled in Ascii or Unicode mode this will result in the integer value being specified in base 256 or base 65536 respectively.

```x = 'a'     ;129
```

## Python

Works with: Python version 3.0

Python 3.0 brought in the binary literal and uses 0o or 0O exclusively for octal.

```>>> # Bin(leading 0b or 0B), Oct(leading 0o or 0O), Dec, Hex(leading 0x or 0X), in order:
>>> 0b1011010111 == 0o1327 == 727 == 0x2d7
True
>>>
```
Works with: Python version 2.6

Python 2.6 has the binary and new octal formats of 3.0, as well as keeping the earlier leading 0 octal format of previous 2.X versions for compatability.

```>>> # Bin(leading 0b or 0B), Oct(leading 0o or 0O, or just 0), Dec, Hex(leading 0x or 0X), in order:
>>> 0b1011010111 == 0o1327 == 01327 == 727 == 0x2d7
True
>>>
```
Works with: Python version 2.5
```>>> # Oct(leading 0), Dec, Hex(leading 0x or 0X), in order:
>>> 01327 == 727 == 0x2d7
True
>>>
```

In Python 2.x you may also specify a long literal by adding an l or L (the latter form is preferred as the former looks like a "1") to the end (ex: 574298540721727L), but this is optional, as integer literals that are too large for an int will be interpreted as a long.

## Quackery

The default base for the Quackery compiler is decimal. This can be overridden for a single hexadecimal number with the building word (compiler directive) `hex` like this; `hex DEFACEABADFACADE`.

The default base can be overridden for a section of code using the compiler directive `now!` like this;

```[ 2 base put ] now!

( The Quackery compiler now expects numeric literals to be in binary.   )

[ base release ] now!

( The Quackery compiler now expects numeric literals to be in whichever
base they were previously. The default base is decimal.               )```

If a new compiler directive akin to `hex` is required, say to allow occasional octal literals in the form `octal 7777`, the compiler can be extended like this;

```  [ 8 base put
nextword dup
\$ '' = if
[ \$ '"octal" needs a number after it.'
message put bail ]
dup \$->n iff
[ nip swap dip join ]
else
[ drop
char " swap join
\$ '" is not octal.'
join message put bail ]
base release ]              builds octal ( [ \$ --> [ \$ )```

## R

0x or 0X followed by digits or the letters a-f denotes a hexadecimal number. The suffix L means that the number should be stored as an integer rather than numeric (floating point).

```0x2d7==727            # TRUE
identical(0x2d7, 727) # TRUE
is.numeric(727)       # TRUE
is.integer(727)       # FALSE
is.integer(727L)      # TRUE
is.numeric(0x2d7)     # TRUE
is.integer(0x2d7)     # FALSE
is.integer(0x2d7L)    # TRUE
```

For more information, see Section 10.3.1 of the R Language definition (PDF).

## Racket

```#lang racket
#b1011010111
#o1327
#d727
#x2d7
```

Output:

```727
727
727
727
```

## Raku

(formerly Perl 6) These all print 255.

```say 255;
say 0d255;
say 0xff;
say 0o377;
say 0b1111_1111;

say :10<255>;
say :16<ff>;
say :8<377>;
say :2<1111_1111>;
say :3<100110>;
say :4<3333>;
say :12<193>;
say :36<73>;
```

There is a specced form for bases above 36, but rakudo does not yet implement it.

```1
```

## Retro

```#100 ( decimal )
%100 ( binary  )
\$100 ( hex     )
'c   ( ascii character )
100  ( number in current base )```

Numbers without a prefix are interpreted using the current base, which is a variable Valid characters are stored in a string called numbers, which can also be altered to allow for larger bases.

## REXX

```/*REXX pgm displays an  integer  (expressed in the pgm as a literal)  in different bases*/
/*────────── expressing decimal numbers ──────────*/
ddd =  123                            /*a decimal number  (expressed as a literal).     */
ddd = '123'                           /*this is exactly the same as above.              */
ddd = "123"                           /*this is exactly the same as above also.         */
hhh = '7b'x                           /*a value,  expressed as a hexadecimal literal.   */
hhh = '7B'x                           /* (same as above)  using a capital  "B".         */
hhh = '7B'X                           /* (same as above)  using a capital  "X".         */
cow = 'dead beef'x                    /*another value,    with a blank for the eyeballs.*/
cow = 'de ad be ef'x                  /* (same as above)  with  blanks for the eyeballs.*/
/*────────── expressing binary numbers ───────────*/
bbb =  '1111011'b                     /*a value,  expressed as a binary literal.        */
bbb = '01111011'b                     /* (same as above)  with a full 8 binary digits.  */
bbb = '0111 1011'b                    /* (same as above)  with a blank for the eyeballs.*/

say '    base  10='            ddd
say '    base   2='  x2b( d2x( ddd ) )
say '    base  16='       d2x( ddd )
say '    base 256='       d2c( ddd )  /*the output displayed is ASCII (or maybe EBCDIC).*/

thingy1=  +123                        /*╔══════════════════════════════════════════════╗*/
thingy2= '+123'                       /*║ All of the THINGYs variables aren't strictly ║*/
thingy3= ' 123'                       /*║ (exactly)  equal to the  DDD  variable,  but ║*/
thingy4=   123.                       /*║ they do compare numerically equal.   When    ║*/
thingy5=    12.3e+1                   /*║ compared numerically, numbers are rounded to ║*/
thingy6=  1230e-1                     /*║ the current setting of  NUMERIC DIGITS.  The ║*/
thingy7=  1230E-0001                  /*║ default for  (decimal)  NUMERIC DIGITS is  9 ║*/
thingy8= ' +     123  '               /*╚══════════════════════════════════════════════╝*/

/*stick a fork in it,  we're all done. */
```
output:
```    base  10= 123
base   2= 01111011
base  16= 7B
base 256= {
```

On TSO d2c(37) does not result in a displayable character. With thing=c2d('A') I see:

```base  10= 193
base   2= 11000001
base  16= C1
base 256= A
```

The first three lines are platform-independent.

## Ring

```see "Decimal literal = " + 1234 + nl
see "Hexadecimal literal = " + dec("4D2") + nl
see "Octal Literal = " + octal(668) + nl
see "Binary literal = " + bintodec("10011010010")

func bintodec(bin)
binsum = 0
for n=1  to len(bin)
binsum = binsum + number(bin[n]) *pow(2, len(bin)-n)
next
return binsum

func octal m
output = ""
w = m
while fabs(w) > 0
oct = w & 7
w = floor(w / 8)
output = string(oct) + output
end
return output```

Output:

```Decimal literal = 1234
Octal Literal = 1234
Binary literal = 1234
```

Unsigned integers, which must begin with `#`, can be expressed in binary, octal, decimal or hexadecimal. A final lowercase letter defines the base.

```#100111010b
#472o
#314d
#13Ah
```

## Ruby

```727 == 0b1011010111  # => true, binary
727 == 0x2d7   # => true, hex
727 == 0o1327  # => true, octal
727 == 01327   # => true, octal

12345 == 12_345 # => true underscores are ignored; useful for keeping track of places
```

## Rust

```10     // Decimal
0b10   // Binary
0o10   // Octal
1_000  // Underscores may appear anywhere in the numeric literal for clarity
10_i32 // The type (in this case i32, a 32-bit signed integer) may also be appended.
10i32  // With or without underscores
```

## Scala

Scala has signed integers of 8, 16, 32 and 64 bits. They can be represented in decimal, octal by prefixing `0`, or hexadecimal by prefixing `0x` or `0X`. Without any other type hint, it defaults to 32 bits integers, or an `Int`. An `l` or `L` suffix will indicate a 64 bits integer, or a `Long`. The other two types, `Byte` and `Short`, can be represented using type ascription, as shown below.

```scala> 16
res10: Int = 16

scala> 020L
res11: Long = 16

scala> 0x10 : Byte
res12: Byte = 16

scala> 16 : Short
res13: Short = 16

scala> 020 : Int
res14: Int = 16

scala> 0x10 : Long
res15: Long = 16
```

## Scheme

(This is an interactive scheme session)

binary: #b, octal: #o, decimal: #d (optional obviously), hex: #x

```> (= 727 #b1011010111)
#t
> (= 727 #o1327)
#t
> (= 727 #d727)
#t
> (= 727 #x2d7)
#t
```

## Seed7

In Seed7 integer literals may have the form <base>#<numeral>. Here <base> can be from the range 2..36. For example:

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

const proc: main is func
begin
writeln(727);
writeln(32#MN);
writeln(16#2D7);
writeln(10#727);
writeln(8#1327);
writeln(2#1011010111);
end func;```

Sample output:

```727
727
727
727
727
727
```

## Sidef

```say 255;
say 0xff;
say 0377;
say 0b1111_1111;
```
Output:
```255
255
255
255```

## Slate

`2r1011010111 + 8r1327 + 10r727 + 16r2d7 / 4`

## Smalltalk

```2r1011010111 + 5r100 + 8r1327 + 10r727 + 16r2d7 / 4
```

binary, base-5, octal, decimal, binary, decimal (default). Any base between 2 and 32 can be used (although only 2, 8, 10 and 16 are typically needed).

There is no size limit (except memory constraints), the runtime chooses an appropriate representation automatically:

```16r1B30964EC395DC24069528D54BBDA40D16E966EF9A70EB21B5B2943A321CDF10391745570CCA9420C6ECB3B72ED2EE8B02EA2735C61A000000000000000000000000 = 100 factorial
"evaluates to true"

2r101010101011111100000011111000000111111111111111110101010101010101010100101000000000111111100000000111
bitCount -> 55
```

## Standard ML

(This is an interactive SML/NJ session)

```- 727 = 0x2d7;
val it = true : bool
- 727 = Word.toInt 0w727;
val it = true : bool
- 0w727 = 0wx2d7;
val it = true : bool
- ~727; (* negative number;
* ~ is the unary negation operator for all numbers, including reals and ints;
* worth mentioning because it's unusual
*)
val it = ~727 : int
```

## Stata

Stata does not have an integer type, except for dataset storage, in order to reduce data size in memory or on disk. Computations are done with floating-point doubles, which can hold exact integers in the range -9007199254740992 to 9007199254740992 (that is, -2^53 to 2^53). Only decimal literals are supported.

## Swift

```let hex = 0x2F // Hexadecimal
let bin = 0b101111 // Binary
let oct = 0o57 // Octal
```

## Tcl

Works with: Tcl version 8.5

(This is an interactive tclsh session; expr is only called to evaluate the equality test.)

```% expr 727 == 0x2d7
1
% expr 727 == 0o1327
1
% expr 727 == 01327
1
% expr 727 == 0b1011010111
1
```

## TI-89 BASIC

Binary, decimal, and hexadecimal are supported. The system base mode sets the default output base, but does not affect input; unmarked digits are always decimal.

`0b10000001 = 129 = 0h81`

## UNIX Shell

The expr command accepts only decimal literals.

```\$ expr 700 - 1
699
\$ expr 0700 - 01
699
```

Some shells have arithmetic expansion. These shells may accept literals in other bases. This syntax only works in places that do arithmetic expansion, such as in \$(( )), or in Bash's let command.

Quoting the manual page of pdksh:

```Integer constants may be specified with arbitrary bases using the
notation base#number, where base is a decimal integer specifying the
base, and number is a number in the specified base.  Additionally,
integers may be prefixed with `0X' or `0x' (specifying base 16) or `0'
(base 8) in all forms of arithmetic expressions, except as numeric
arguments to the test command.
```

pdksh allows bases from 2 to 36. The letters a-z or A-Z represent numbers 10 to 35.

Bash allows the same syntax as pdksh. In addition, Bash can handle bases as high as 64: the symbols used are digits, lowercase letters, uppercase letters, @ and _ in that order; if the BASE is less than or equal to 36, lowercase and uppercase letters can be used interchangeably to represent number from 10 and 35. (From the info manual of the Bash).

Works with: bash
```dec=727
oct=\$(( 01327 ))
bin=\$(( 2#1011010111 ))
hex=\$(( 0x2d7 ))
# or e.g.
let bin=2#1011010111
let "baseXX = 20#1g7"
```
Works with: pdksh version 5.2.14
```dec=727
oct=\$(( 01327 ))
bin=\$(( 2#1011010111 ))
hex=\$(( 0x2d7 ))
# or e.g.
(( bin = 2#1011010111 ))
(( baseXX = 20#1g7 ))
```

## Ursa

Ursa supports signed, base-10 integers.

```decl int i
set i 123
set i -456```

## Ursala

Natural numbers (i.e., unsigned integers) of any size are supported. Only decimal integer literals are recognized by the compiler, as in a declaration such as the following.

`n = 724`

Signed integers are also recognized and are considered a separate type from natural numbers, but non-negative integers and natural numbers have compatible binary representations.

`z = -35`

Signed rational numbers of unlimited precision are yet another primitive type and can be expressed in conventional decimal form.

`m = -2/3`

The forward slash in a rational literal is part of the syntax and not a division operator. Finally, a signed or unsigned integer with a trailing underscore, like this

`t = 4534934521_`

is used for numbers stored in binary converted decimal format, also with unlimited precision, which may perform better in applications involving very large decimal numbers.

## Verbexx

```//    Integer Literals:
//
//    If present, base prefix must be:    0b 0B (binary) 0o 0O (octal)
//                                        0x 0X (hex)
//
//    If present, length suffix must be:  i I i64 I64 (INT64_T)
//                                        u U u64 U64 (UINT64_T)
//                                        i32 I32 (INT32_T) u32 U32 (UINT32_T)
//                                        i16 I16 (INT16_T) u16 U16 (UINT16_T)
//                                        i8  I8  (INT8_T)  u8  U8  (UINT8_T)
//                                        u1  U1  (BOOL_T)  u0  U0  (UNIT_T)
//                                        iV  iv  Iv IV             (INTV_T)

//     ------------ ----------    ------------  --------------
@SAY  0b1101        0o016         19999999      0xFfBBcC0088   ; // INT64_T
@SAY  0B0101        0O777        -12345678      0X0a2B4c6D8eA  ; // INT64_T
@SAY  0b1101I64     0o707I64      12345678i64   0xFfBBcC00i64  ; // INT64_T
@SAY  0b1101I       0o57707i     -2345678I      0xfafbbCc99i   ; // INT64_T
@SAY  0b1001U64     0o555u64      33345678u64   0xFfaBcC00U64  ; // UINT64_T
@SAY  0b10010100U   0o1234567u    3338u         0x99faBcC0EU   ; // UINT64_T
@SAY  0B0101i32     0O753I32      987654i32     0XAAb4cCeeI32  ; // INT32_T
@SAY  0B0101u32     0O573u32      987654U32     0X0BAb4cCeeU32 ; // UINT32_T
@SAY  0B0101i16     0O753i16     -017654I16     0X000cCffi16   ; // INT16_T
@SAY  0B0101u16     0O633U16      27654U16      0X000dDbBu16   ; // UINT16_T
@SAY  0B0101i8      0O153i8      -000114I8      0X000ffi8      ; // INT8_T
@SAY  0B0101u8      0O132U8       00094U8       0X0000bu8      ; // UINT8_T
@SAY  0b0u1         0o0u1         00u1 0U1      0x000u1        ; // BOOL_T (FALSE)
@SAY  0B001u1       0O1u1         1u1 01U1      0X1u1 0x001U1  ; // BOOL_T (TRUE )
@SAY  0b0u0         0o000u0       00u0 0U0      0x0u0 0X000U0  ; // UNIT_T
@SAY                             -1234iV                       ; // INTV_T (cpp_int)
@SAY                              56781234Iv                   ; // INTV_T (cpp_int)

//  note: _ (underscores) can appear in the main numeric part of the literal,
//        after any base prefix, and before any length suffix.  If there is
//        no prefix, the numeric literal cannot begin with underscore:

@SAY 100_000  1_u1  0x_FFFF_u16  1__0__  0x__7890_ABCD_EFAB_CDEF__u64;```

## Visual Basic

Works with: Visual Basic version 5
Works with: Visual Basic version 6
Works with: VBA version Access 97
Works with: VBA version 6.5
Works with: VBA version 7.1

Integer literals can be expressed in octal, decimal and hexadecimal form.

```Sub Main()

'Long:    4 Bytes (signed), type specifier = &
Dim l1 As Long, l2 As Long, l3 As Long
'Integer: 2 Bytes (signed), type specifier = %
Dim i1 As Integer, i2 As Integer, i3 As Integer
'Byte:    1 Byte (unsigned), no type specifier
Dim b1 As Byte, b2 As Byte, b3 As Byte

l1 = 1024&
l2 = &H400&
l3 = &O2000&
Debug.Assert l1 = l2
Debug.Assert l2 = l3

i1 = 1024
i2 = &H400
i3 = &O2000
Debug.Assert i1 = i2
Debug.Assert i2 = i3

b1 = 255
b2 = &O377
b3 = &HFF
Debug.Assert b1 = b2
Debug.Assert b2 = b3

End Sub
```

## Wren

Wren supports just two kinds of integer literal: decimal and hexadecimal.

Despite being written in C, Wren doesn't support octal literals using the 'leading zero' notation. These are just treated as ordinary decimal literals with the leading zeros ignored.

All numbers, whether integers or not, are instances of the built-in Num class which is always 8 bytes in size. A consequence of this is that integers whose absolute magnitude exceeds 2^53-1 cannot be accurately represented in Wren.

As the only difference between integers and other numbers is that the former do not have a decimal part, it is also possible to represent integers using scientific notation.

```var a = 255
var b = 0xff
var c = 0255 // not an octal literal
var d = 2.55e2
System.print([a, b, c, d])
```
Output:
```[255, 255, 255, 255]
```

## XPL0

```code CrLf=9, IntOut=11;
def A=123, B=\$123, C=%11_0011, D=^A;
[IntOut(0, A);  CrLf(0);        \decimal
IntOut(0, B);  CrLf(0);        \hex
IntOut(0, C);  CrLf(0);        \binary
IntOut(0, D);  CrLf(0);        \ASCII
]```

Output:

```123
291
51
65
```

## Z80 Assembly

Numeric values can be defined in decimal, binary, or hexadecimal.

```byte &55       ;hexadecimal 55
```123, 0d1_000