Hello world program

A Hello world program is usually a program made by computer programmers that are new to a programming language, or to test if the compiler for this language is working correctly. It will simply put the text Hello, World! on the screen. This program is used in most programming languages.

Hello World in C

#include <stdio.h>
void main()
{
      printf("Hello, World!\n");
}

Hello World in Python

print "Hello world"

# This also works:

Hello_world = 1
if Hello_world:
   print "Hello world!"

Hello World in Ruby

puts "Hello world!"

Hello World in MS-DOS

ECHO HELLO WORLD!

Hello World in C++

#include <iostream>
 
int main(int argc, char** argv){
 std::cout << "Hello, World!" << std::endl;
}

Hello World in C#

class HelloWorldApp
{
    public static void Main()
    {
        System.Console.WriteLine("Hello, world!");
    }
}

Hello World in D

import std.stdio;

void main()
{
   writefln("Hello world!");
}

Hello World in Java

public class Hello
{
     public static void main(String[] args)
     {
           System.out.println("Hello, World!");
     }
}

Hello World in JavaScript

alert("Hello world!");

Hello World in Fortran 90

program HelloWorld
  write (*,*) 'Hello world!'
end program HelloWorld

Hello World in OCaml

print_string "Hello world!";;

Hello World in Perl

#!/usr/local/bin/perl
print "Hello, world!\n";

Hello World in PHP

<?php
 echo "Hello, World!";
?>

Hello World in Tcl

puts -nonewline "Hello world!"

Hello World in BASIC

10 PRINT "Hello World!"

Hello World in Visual Basic .NET

Imports System
 
Public Module modmain
   Sub Main()
    Console.WriteLine ("Hello, World!")
   End Sub
End Module

Hello World in Visual Basic

Private Sub Form_Load()
   MsgBox "Hello, World!"
End Sub

Hello World in Visual FoxPro

? "Hello, world!"

Hello World in DarkBASIC

 print "Hello, World!"

Hello World in PASCAL

begin
  writeln("Hello, World!");
end.

Hello World in Seed7

$ include "seed7_05.s7i";

const proc: main is func
  begin
    writeln("Hello, World!");
  end func;

Hello World in Lua

#!/usr/bin/lua
print ("Hello world!")

Hello World in Scheme

(display "Hello world!")

Hello World in Logo

print [Hello World!]

Hello World in Emacs Lisp

(princ "Hello world!")

Hello World in Maple

print("Hello world!");

Hello World in SNOBOL

OUTPUT = 'Hello World'
END

Hello World in Standard ML

print "Hello world!\n"

Other websites

• HelloWorldWiki
• helloworld.org
• The Hello World Collection
• codepad.org - Can compile some of the programs