What is the basic form of Arduiono code?

This is the basic arduiono code:

void setup() {

  // put your setup code here, to run once:

}

void loop() {

  // put your main code here, to run repeatedly:

}

So , I think you are thinking about that. What's this!!!!!

Firstly i wants to say that's how Arduino work.

In computer you give some data from your keyboard to process its. Computer will get this data and operate on that and gives you some processed result. But where from arduiono gets it data to process.As arduino is a mini computer , its main task to get data process it and get the final result.

So where from this data?

Actually this data are gathered from real world by using sensor.
This data will be processed by arduino and give you the result set.