pxt-calliope/docs/blocks/loops/while.md
Sam El-Husseini e3975e65e5 pxt-microbit Accessibility PR ()
* Accessibility changes
2017-09-07 13:42:08 -07:00

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# @extends
## #examples
## Example: diagonal line
The following example uses a while loop to make a diagonal line on the LED screen (points `0, 0`, `1, 1`, `2, 2`, `3, 3`, `4, 4`).
```blocks
input.onButtonPressed(Button.A, () => {
let index = 4;
while(index >= 0) {
led.plot(index, index);
index--;
}
})
```