Hello World Fun

Why this Hello World writing?

Well, for at least a few reasons.

One, to help others understand the diversity of different

programming languages in one of it’s simplest terms to humans.

Two, at a glance to compare the languages.

Three, just to see what is available and for the curious and fun.

Oh, and a gentle reminder on how to start the first step, and which.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In Ruby:

p ‘Hello World’

In Smalltalk

Transcript show: 'Hello, world!'.

In python3:

print(‘Hello World’)

In Perl

print "Hello World\n";

In PHP

<?php echo ’<p>Hello World</p>’; ?>

In Go Programming

package main

import “fmt”

func main() {

fmt.Println(“Hello, 世界”)

}

In Javascript

1:   <script type="text/javascript">
2:   <!-- to hide script contents from old browsers
3:   document.write("Hello World!")
4:   // end hiding contents from old browsers  -->
5:   </script>
In ActionScript

package {
 import flash.display.*;
 import flash.text.*;

 public class HelloWorld extends Sprite {
   private var greeting:TextField = new TextField();

   public function HelloWorld() {
     greeting.text = "Hello World!";
     greeting.x = 100;
     greeting.y = 100;
     addChild(greeting);
   }
 }
}

In ASP.NET

<%@ Page Language="VB" %>

<html>
<head>
<title>ASP.NET Hello World</title>
</head>
<body bgcolor="#FFFFFF">

<p><%= "Hello World!" %></p>

</body>
</html>

In VB.NET

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        MessageBox.Show("Hello, World")
    End Sub
End Class

In QBASIC

PRINT "Hello, World!"

In C++

#include <iostream>

int main()
{
  std::cout << "Hello World!" << std::endl;
  return 0;
}
In C Programming

 main( ) {
        printf("hello, world");
 }
In Java
class myfirstjavaprog {
public static void main(String args[])         {
System.out.println("Hello World!");
}
}

In Pascal

program HelloWorld;

begin
  writeln('Hello World');
end.

In Lisp

(print "Hello World")
In COBOL

000100 IDENTIFICATION DIVISION.
000200 PROGRAM-ID.     HELLOWORLD.
000300
000400*
000500 ENVIRONMENT DIVISION.
000600 CONFIGURATION SECTION.
000700 SOURCE-COMPUTER. RM-COBOL.
000800 OBJECT-COMPUTER. RM-COBOL.
000900
001000 DATA DIVISION.
001100 FILE SECTION.
001200
100000 PROCEDURE DIVISION.
100100
100200 MAIN-LOGIC SECTION.
100300 BEGIN.
100400     DISPLAY " " LINE 1 POSITION 1 ERASE EOS.
100500     DISPLAY "Hello world!" LINE 15 POSITION 10.
100600     STOP RUN.
100700 MAIN-LOGIC-EXIT.
100800     EXIT.

In Assembly Language

title   Hello World Program                             (hello.asm)
; This program displays "Hello, World!"

dosseg
.model small
.stack 100h

.data
hello_message db 'Hello, World!',0dh,0ah,'$'

.code
main  proc
      mov    ax,@data
      mov    ds,ax

      mov    ah,9
      mov    dx,offset hello_message
      int    21h

      mov    ax,4C00h
      int    21h
main  endp
end   main

In Bash Scripting

#!/bin/bash
echo Hello world

In Windows PowerShell

PS> 'hello, world!'.ToUpper()

Above may be some of the more popular ones, but there are

easily more than a hundred Programming Languages around the world,

and mor comparisons here. Wait, there’s more, how about Hello World in Markup Languages?

In HTML

<html>
  <head>
    <title>Tutorial: HelloWorld</title>
  </head>
  <body>
    <h1>HelloWorld Tutorial</h1>
  </body>
</html>

In XML

<?xml version="1.0" encoding="UTF-8"?>
<text>
  <para>hello world</para>
</text>

Hello World in Web Application Frameworks?

In Rails 3

```
$ rails hello
```
```
$ cd hello
```
```
$ rails generate controller hello
```
Open the file config/routes.rb. Almost at the bottom (line #57) is this line:
```
# match ':controller(/:action(/:id(.:format)))'
```
Remove the # in front so the line looks like:
```
match ':controller(/:action(/:id(.:format)))'
```
Create a file named index.html.erb in app/views/hello containing the text ‘Hello world’.
```
$ rails server
```