First things first: 1+1 and "Hello World"
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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.
Computing 1+1
- Click into the Workspace window
- Type
1+1.
, 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
2
, 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
"..."
, 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
'Hello World'.
- 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
'Hello World'
, 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
"..."
, that means it is commented, you can keep it there like that, it is going to be ignored by Cuis.
Exercises
- Compute
7 * 3
. No suprises - Compute
123423412123123123 * 78787877878787787878
. It does it! Your pocket calculator can't do that! - Compute
2 + 3 * 4
. Hey this is wrong !!! No worries, we will see the reason behind this in another section.
Dr. Nicola Mingotti