10 Nov 2016 •on c++ java php javascript .net c# vb.net objective-c kotlin swift scala

Hello World

It’s a common situation in Development’s World, that when someone tackle a new programming language, the first thing he learn is how to write a HelloWorld program.

And I cannot find a better way to start this blogging journey that write it in all the languages I have touched alongs those years. Let me start with the oldy C++.

 // Hello world in C++
#include <iostream>

int main()
{
    std::cout << "Hello World!" << std::endl;
}

Both in my first job and in college I usually wrote Java programs.

// Hello world in Java
public final class HelloWorld {
  public static void main( String args[] ) {
    System.out.println( "Hello World!" );
  }
}

Some time after I get into the wild territory of Web development, and I work with PHP in the Backend side (in those time we call it Backoffice)

// Hello world in PHP
<?php
  echo 'Hello World!';
?>

Fighting also with my loved language JavaScript in the Frontend side.

<html>
<body>
<script language="JavaScript" type="text/javascript">
  // Hello World in JavaScript
  document.write('Hello World');
</script>
</body>
</html>

Luckily for me working with those languages only took place during a short period of time, until start working with .NET Platform.

//Hello World in C#
class HelloWorld
{
    static void Main()
    {
        System.Console.WriteLine("Hello, World!");
    }
}

'Hello World in Visual Basic .NET (VB.NET)
Imports System.Console

Class HelloWorld
    Public Shared Sub Main()
        WriteLine("Hello, world!")
    End Sub
End Class

Just after that is when my mobile development journey begins with Android development and Objective-C for iOS.

// Hello world in Objective-C
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    NSLog (@"Hello, World!");
    [pool drain];
    return 0;
}

Until now, where I research with some new programming languages like Swift and Kotlin

// Hello world in Swift
println("Hello, world!")

// Hello world in Kotlin
fun main(args : Array) {
    println("Hello, world!")
}

Extra Ball: Scala and Functional programming draws my attention and although I do not use it at work, sooner rather than later I will mess with him.

// Hello world in Scala
object HelloWorld extends App {
  println("Hello world!")
}

These and alot more Hell World will be find in helloworldcollection.de