Add two numbers

Question

Input: Two integers. Preferably decimal integers, but other forms of numbers can be used. These can be given to the code in standard input, as arguments to the program or function, or as a list.

Output: Their sum. Use the same format for output integers as input integers. For example, the input 5 16 would lead to the output 21.

Restrictions: No standard loopholes please. This is code-golf, answer in lowest amount of bytes wins.

Notes: This should be fairly trivial, however I'm interested to see how it can be implemented. The answer can be a complete program or a function, but please identify which one it is.

Test cases:

1 2 -> 3
14 15 -> 29
7 9 -> 16
-1 8 -> 7
8 -9 -> -1
-8 -9 -> -17

Or as CSV:

a,b,c
1,2,3
14,15,29
7,9,16
-1,8,7
8,-9,-1
-8,-9,-17

Leaderboard

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• Dennis: This is quite trivial, but not really simpler than, e.g., the Hello World catalog. Given that the ability to add integers is one of our two requirements for programming languages, I'd say it's worthwhile to have if properly specified.
• FinW: Can the answer take input with preceding zeros as default? e.g. 5 16 is inputted as 005 016
• anna328p: @FinW Sure. As long as they don't get interpreted as octal.

Answer 1

Ark

<<+^

example: [1, 4, 5]

Answer 2

makina, 13 bytes

P >iN
>>+
Ni<

Answer 3

Quipu, 11 bytes

\/
\/
++
/\

Attempt This Online!

Explanation

Each side-by-side pair of characters is a command ("knot"), and execution proceeds from top to bottom:

\/ Input a number
\/ Input another number
++ Add the values of the previous two knots
/\ Output the value of the previous knot

Answer 4

Billiards, 7 characters = 11 bytes

Language made after the challenge.

↧ # Takes an input
↧ # Takes another input
+ # Adds them together
P # Outputs as an integer

Alternatively, for the same number of bytes:

↧↧ # Takes two inputs
+/ # Adds them together; the '/' deflects the second input into the '+'
P # Output as an integer

Answer 5

MSWLogo, 23 bytes

to f :a :b
pr :a+:b
end

Picture to prove it works

A function which takes two inputs and prints the output.

Answer 6

Hatchback, 25 bytes

16 0 16 1 2 0 1 1 0 65535

gets 2 inputs (16 0 16 1), adds them together (2 0 1), and prints it (1 0)

Answer 7

BrainChild ASM, 5 bytes

asm function add(int, int) -> int {
 xpopa
 xpopb
 addab
 xpushb
 ret
}

Hex-dump of bytecode

 0 1 2 3 4 5 6 7 8 9 A B C D E F
00000000: 34 35 1B 2F 14 | 45./. 

Pops the x stack into the a and b registers, sums them, then pushes the result back unto the x stack. Only supports Unsigned 32 bit integers.

Try It Online!

With tests

Answer 8

Branch, 2 bytes

+#

Try it on the online Branch interpreter!

Explanation

+ adds the values of the children of the current node. If any nodes are missing, they are usually created with a value of 0; however, binary operations will instead read from STDIN (this usually gets 0 if the input is exhausted, but if the input was empty to begin with, feof doesn't seem to work the way I want it to).

# just outptus the value of the current node as a number (as opposed to a character, which . does)

Answer 9

Uiua, 1 byte

+

Try it on Uiua Pad!

Answer 10

Regenerate, 10 bytes

${$~1+$~2}

Takes the input numbers as command-line arguments. Attempt This Online!

Explanation

${ } Treat the result of this expression as a string:
 $~1 First cmdline arg
 + Plus
 $~2 Second cmdline arg

Answer 11

How dare you fuck the brain, (削除) 13 (削除ここまで) (削除) 7 (削除ここまで) (削除) 6 (削除ここまで) 4 bytes

;=;+

Try it online!

Explained

;=; #Get user input on cell 1, copy it to cell 2, then overwrite the input on cell 1
 + #Adds the two cells together and implicit print it as a number

Answer 12

hashmap (Yes, the name starts with a lowercase letter.), 3 bytes

hh+
h Take input
 h Take input
 + Get the sum

Answer 13

C, 25 Bytes

p(a,b){printf("%d",a+b);}

Usage

p(a,b){printf("%d",a+b);}
main(c,v)char**v;{p(atoi(*++v),atoi(*++v));}

Or, if you want a full program: (+29 chars)

main(c,v)char**v;{printf("%d",atoi(*++v)+atoi(*++v));}

Take 2 arguments and outputs the results in STDOUT

• Karl Napf: You dont need to print it, a simple return will suffice.

Answer 14

Maple, 3 bytes

`+`

Usage:

> `+`(1,2)
 3

Answer 15

Gema, 13 characters

* *=@add{*;*}

Sample run:

bash-4.3$ gema '* *=@add{*;*}' <<< '5 16'
21

Answer 16

golflua, 12 characters

\f(a,b)~a+b$

Sample run:

> \f(a,b)~a+b$ 
> w(f(5,16))
21

Answer 17

MoonScript, 10 characters

(a,b)->a+b

Sample run:

bash-4.3$ .luarocks/moon <(echo 'print ((a,b)->a+b)(5,16)')
21

Answer 18

SQF, 19

Using the function-as-a-file format:

params["x","y"];x+y

Call as: [X, Y] call NAME_OF_COMPILED_FUNCTION

Answer 19

S.I.L.O.S 38

readIO 
a = i
readIO 
a + i
printInt a

---

For documentation see the repo https://github.com/rjhunjhunwala/S.I.L.O.S Fee free to try this code online!

• Leaky Nun: Perhaps you meant printInt instead of prinInt
• Leaky Nun: How does it work?
• Rohan Jhunjhunwala: @LeakyNun whoopsmy bad, fixing now
• Leaky Nun: 2 bytes off
• Rohan Jhunjhunwala: @LeakyNun thanks, you showed me a feature I didn't even know my language had! I though readIO must have a prompt after it!

Answer 20

Batch, 52 Bytes

set/p x=
set/p y=
set/a z=%x%+%y%
echo %z%
pause>nul

This is the lowest byte number you will have while still making the program work. I did the challenge by making a program, not just what the operation was. This method will allow you to input any number and then any other number, including negatives, and the program will output a number.

• Blue: Is this a full program? I don't know batch but it looks like the numbers get inputted by editing the program rather than a prompt of some kind
• Addison Crump: Hey Nitrate. Welcome to PPCG. A few problems with this post: this is code-golf, which means you need to shorten your code to as short as possible. You don't have to take input like this - you could possibly take it as command line arguments to shorten it. Nice to see you here, m9.
• Dennis: @muddyfish The /p switch allows you to set a variable equal to a line of input entered by the user.

Answer 21

Y, 5 bytes

{α+β}

Anonymous function returning the sum of it first and second argument.

Answer 22

JavaScript, 27 bytes

function s(a,b){return a+b}

I thought this needed a semi-colon after the return statement, but when typing it into the Chrome Console, it works fine without.

• TuxCrafting: a=>b=>a+b, but then it will be a duplicate
• Yotam Salmon: Also (a,b)=>a+b is better, but still, duplicate

Answer 23

2 cases:

Pyth, 5 bytes

Input format: n1, n2

code: +hQeQ

Pyth, 1 byte

Input format: n1+n2

code: Q

(But I'm not sure if the second is called "cheating" :-P)

Answer 24

Java, 91 bytes

interface M{static void main(String[]a){System.out.print(new Long(a[0])+new Long(a[1]));}}

Usage: java M <num1> <num2>

Tips appreciated.

• Pavel: (a,b)->a+b as a lambda expression
• Kevin Cruijssen: @Pavel Or a->b->a+b to save 1 more byte.

Answer 25

PHP, 5 bytes

bcadd

PHP has the BC-Math library for arbitrary length integers.
bcadd adds the numbers represented by the two string operands.

A full program would need 21 bytes:

<?=$argv[1]+$argv[2];

alright 20 bytes with array_sum (assuming that the file name does not start with a digit).

Answer 26

Carrot, 5 bytes, non-competing

$^F+$

Try it online! (no permalink)

Input numbers are separated by a newline like so:

x
y

$ in c^rrot mode (the code before the first ^) pops the first value from the input array. So now the stack contains x. After that, this value is converted to a number using F. Then we add it with $, the next value in the input array, ie y. Output is implicit, so this outputs x+y.

An alternative at the cost of 1 byte would be:

#^A + 

note the trailing space

# takes all of the input (separated by a space), and converts it to an Array by splitting on s. Then encounter a +, which is given a as its argument, meaning that all the elements of the array will be summed up.

Answer 27

Scala, 17 Bytes

x:Int=>y:Int=>x+y

Answer 28

REXX, 15 bytes

arg a b
say a+b

Answer 29

J, 4 bytes

I've defined a function f and set it to the built-in addition operator.

f=:+

Answer 30

AHK, 15 bytes

1+=%2%
Send,%1%

1 and 2 are, by default, the first two arguments passed in to a program. Sometimes you have to escape them with percent signs so it doesn't confuse the variable 1 with the number one.