WEBVTT

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When you start your I.D., you indirectly get a new amnesty program, but you can see here, in fact,

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the program is not really empty.

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It already contains two functions void setup and void loop.

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If you don't know what functions are.

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Don't worry, I'm going to cover that a little bit later in the course.

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So for any original program you create, this is the minimum code you should have.

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If one of those functions is missing, you won't be able to compete in the code, do you, on a board.

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And when creating your own program, you will write some code inside each of those functions.

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This code will then be executed on the Arab world.

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So the first thing you can see is that the functions are empty.

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OK, so when you run the program, what will happen?

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So first of all, if you put any instruction here at the beginning of your program, this will be executed

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and then the void setup function will be executed first.

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So whatever code you put between those two curly brackets here will be executed first after it is executed

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once and only once.

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The code inside the void loop function will be executed in what we can call an infinite loop.

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So basically all the code here will be executed and once it is finished, it will be executed again

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and again and all of that again.

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So first, the code in the void setup executive wants and then the code in the void loop is executed

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an infinite number of time until you simply restart the program or you shut down your arduino and inside

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the function.

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So inside the void set up, for example, the instructions will be executed line by line.

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So first line five and then line six, etc..

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As you can see, we already have some text here.

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But this is not code.

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This is just a command.

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So we've double slash.

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You can actually create some command if output doubles.

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I can just create any comment I want.

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This is very useful for you to improve the credibility of your program.

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OK, so you can put some command to give some indication of what's happening in your code.

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OK, in the same folder, void loop function, all the lines will be executed one by one.

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And this is also a command line.

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So we're going to come back to those functions quite a few times in the schools.

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But basically what you would write inside the void setup function is the code to initialize your program,

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for example, to initialize valuable, to set up a sensor, to set up a communication.

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So everything that you need to set up at the beginning of your program and that you basically need to

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set up once and then in the loop function, you rewrite your application code.

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So that would be the code that we learn all over again until the admin board is powered off, all restarted.