View source for First things first: 1+1 and "Hello World"

Once you have Cuis running you may well ask yourself 'And now, what do I do?'. The short answer is, open a '''Workspace'''.

I an empty area of the screen do '''LeftClik''', a menu will appear, select '''Open''', anohter menu pops up, select '''Workspace'''.

Now you should see this.

[[File:Hello-world.png|300x300px]]

=== Computing 1+1 ===

* Click into the Workspace window
* Type <code>1+1.</code> , attention, the dot at the end matters.
* The cursor should blinking be at the right of the final dot.
* Press Ctrl+p (in Linux, '''''Cmd+p''''' in the Mac), you should see at the right appear <code>2</code>, hightlighted.
* Good! You made your first computation!
* Now what ?
* You can press the '''delete''' button and the result gets cancelled
* OR, You can press '''''Ctrl+Shift+'''''' and the result gets surrounded into <code>"..."</code>, that means it is commented, you can keep it there like that, it is going to be ignored by Cuis.

=== And now the classic: "Hello World" ===

* Move a few lines below your previous calculation.
* Type <code>'Hello World'.</code>
* The cursor should blinking be at the right of the final dot.
* Press Ctrl+p (in Linux, '''''Cmd+p''''' in the Mac), you should see at the right appear <code>'Hello World'</code>, hightlighted.
* Good! You got the computer tell you "Hello World".
* Now what ?
* You can press the '''delete''' button and the result gets cancelled
* OR, You can press '''''Ctrl+Shift+'''''' and the result gets surrounded into <code>"..."</code>, that means it is commented, you can keep it there like that, it is going to be ignored by Cuis.

=== Exercises ===

* Compute <code>7 * 3</code>. No suprises
* Compute <code>123423412123123123 * 78787877878787787878</code>. It does it! Your pocket calculator can't do that!
* Compute <code>2 + 3 * 4</code>. Hey this is wrong !!! No worries, we will see the reason behind this in another section.

----Dr. Nicola Mingotti