HelloWorld on OLinuXino (ArchLinux ARM) using C

So assuming you have an iMX233-OLinuXino-MAXI and are running ArchLinux on it, here is how you you would go about running a HelloWorld application on it:

1. Gain access to OLinuXino's console over serial port and login using the credentials (login: root & password:root)
2. Issue the command to OLinuXino for performing a full system upgrade, make sure the board is connected to your WiFi router using an Ethernet cable as it will use the internet to fetch the latest packages:
   pacman -Syu
3. Reboot the board by issuing the command:
   reboot
4. Install the compiler and other basic development tools onto OLinuXino (When asked, press enter to keep all options at default):
   pacman -S base-devel
5. Reboot the board.
6. Use the nano text editor to write a helloworld program:
   nano hello.c
7. Type the code:
   
   #include <stdio.h>
   #include <stdlib.h>
   int main(void) {
           puts("!!!Hello World!!!");
           exit(EXIT_SUCCESS);
   }

Press Control+O to save the file and Control+X to exit.

Compile the file:
gcc hello.c

Run the compiled executable and observe the output:
./a.out

In case you want to now try compiling kernel modules, look here.