Beginning Programming Using Retro Computing by Gerald Friedland

Author:Gerald Friedland
Language: eng
Format: epub
ISBN: 9781484241462
Publisher: Apress

Can you explain it?

Let’s try one last one:

BOX 1,0,101,302,150

Press RETURN.

Look at the result and explain it!

Here is the result:

There are many other graphics commands that do cool things. It would take many pages to explain them, so it’s best if you experiment with them on your own. You will need basic addition and subtraction. The first number always indicates draw in black (1) or draw in white (0). Draw in white can be used to erase. The second number always indicates how far to the right. The third number always indicates how far to the bottom. Try another command.

Type this:

PAINT 1,1,1

Press RETURN.

The PAINT command colors a structure.

This is the result:

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