Danger! Steve Bytes

Hello, world!

Published by

sdmarcotte

on

I was advised that my first blog post should be a simple introduction, so the best way to do that would be in various languages I have learned over the years. So here goes…

BASIC

10 print “Hello, world!”

C

void main( void ) { 

  printf( “Hello, world!” );

}

Pascal

program Hello;

begin

  writeln ( 'Hello, world.' )

end.

x86 Assembler

org  0x100
mov  dx, msg
mov  ah, 0x09
int  0x21         ; DOS Interrupt: ah = 0x09 - Print string function
mov  ah, 0x4c
int  0x21         ; DOS Interrupt: ah = 0x4c - Terminate function

msg  db 'Hello, World!', 0x0d, 0x0a, '$'   ; $-terminated message

COBOL

IDENTIFICATION DIVISION.
PROGRAM-ID. HELLO-WORLD.
* simple hello world program
PROCEDURE DIVISION.
    DISPLAY 'Hello world!'.
    STOP RUN.

Lisp

( DEFUN HELLO ( ) “Hello, world!” )

Bash

#!/bin/bash          

GREETING = "Hello World!"

echo $GREETING

C++

#include<iostream>

using namespace std;

class Greeting { 

  public:
    void display( ) { 
      cout << "Hello World\n";
   } 
 };

int main( void ) { 

  Greeting g;  
  g.display( ); 
  return 0;

}

HTML

<!DOCTYPE html PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML>
    <HEAD>
      <TITLE>
        Hello, world! 
      </TITLE>
    </HEAD>
  <BODY>
    Hello, world!
  </BODY>
</HTML>

Perl

#!/usr/bin/perl

use strict;
use warnings;

print( "Hello, World!" );

Java

public class HelloWorld { 

  public static void main( String[] args ) { 

    System.out.println( "Hello, World" );

  } 
}

AccentR

$ ACCENT

* type “Hello, World!”

SQL

select “Hello, world!”;

Objective-C

#import <Foundation/Foundation.h>

@interface HelloWorldClass:NSObject
  - ( void ) displayMessage;
@end

@implementation HelloWorldClass

(void) displayMessage { 
   NSLog( @"Hello, World! \n” );
} 

@end

int main( ) { 

  HelloWorldClass *helloWorldClass = [ [ HelloWorldClass alloc ] init ];
  [ helloWorldClass displayMessage ];
  return 0;
}

Arduino

void setup( ) { 
  pinMode( LED_BUILTIN, OUTPUT );
} 

void loop( ) { 

  digitalWrite( LED_BUILTIN, HIGH );
  delay( 1000 );
  digitalWrite( LED_BUILTIN, LOW ); 
  delay( 1000 ); 

}

Python

def displayMessage( ):
  print( “Hello, world!” )

displayMessage( )

Swift

let greeting: String = “Hello, world!”
print( “\( greeting )” )

SwiftUI

import SwiftUI

@main
struct HelloWorldApp: App {
    var body: some Scene {
        WindowGroup {
            Text("Hello, world!")
        }
    }
}
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