How to Calculate 2+2 in 30 Different Programming Languages

Here is how you can calculate the expression “2+2” in various (30+) programming languages:

2+2 in C++

#include <iostream>

int main() {
  std::cout << 2+2 << std::endl;
  return 0;
}

2+2 in C#

using System;

namespace ConsoleApp1 {
  class Program {
    static void Main(string[] args) {
      Console.WriteLine(2+2);
    }
  }
}

2+2 in C

#include <stdio.h>

int main(void) {
  printf("%d\n", 2+2);
  return 0;
}

2+2 in Java

public class Main {
  public static void main(String[] args) {
    System.out.println(2+2);
  }
}

2+2 in Python

print(2+2)

2+2 in Ruby

puts 2+2

2+2 in JavaScript

console.log(2+2);

2+2 in PHP

<?php
  echo 2+2;
?>

2+2 in Swift

import Foundation

print(2+2)

2+2 in Kotlin

fun main(args: Array<String>) {
  println(2+2)
}

2+2 in Go

package main

import "fmt"

func main() {
  fmt.Println(2+2)
}

2+2 in R

print(2+2)

2+2 in Julia

println(2+2)

2+2 in Haskell

main = putStrLn (show (2+2))

2+2 in Lisp

(print (+ 2 2))

2+2 in Prolog

:- initialization(main).

main :-
  write(2+2), nl.

2+2 in Bash

#!/bin/bash

echo $((2+2))

2+2 in PowerShell

Write-Output (2+2)

2+2 in Tcl

puts [expr 2+2]

2+2 in Matlab

disp(2+2)

2+2 in Fortran

program main
  print *, 2+2
end program

2+2 in Pascal

program Main;
begin
  writeln(2+2);
end.

2+2 in Basic

PRINT 2+2

2+2 in Ada

with Ada.Text_IO; use Ada.Text_IO;

procedure Main is
begin
  Put(2+2);
end Main;

2+2 in Assembler (x86)

section .data
section .text

global _start

_start:
  mov eax, 2
  add eax, 2
  mov ebx, eax
  mov eax, 1
  int 0x80

2+2 in Erlang

main() ->
  io:fwrite("~p~n", [2+2]).

2+2 in OCaml

let () =
  print_int (2+2);
  print_newline ()

2+2 in Scala

object Main extends App {
  println(2+2)
}

2+2 in F#

printfn "%d" (2+2)

2+2 in Groovy

println 2+2

2+2 in Elixir

IO.puts(2+2)

2+2 in Rust

fn main() {
  println!("{}", 2+2);
}

As you can see, the syntax for performing arithmetic operations and printing output varies somewhat between programming languages, but the basic principles are usually the same. In most languages, you can use the + operator to add two numbers together, and then use a function or method to print the result.