69 lines
1.4 KiB
Markdown
69 lines
1.4 KiB
Markdown
# digi yoyo challenges
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Coding challenges for the digi yoyo.
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## Before we get started
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Complete the following [guided tutorial](/lessons/digi-yoyo/activity), your code should look like this:
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```blocks
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let count = 0;
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while (count < 10) {
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basic.pause(100);
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basic.showNumber(count);
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count = count + 1;
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basic.pause(20);
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}
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```
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## Challenge 1
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How about we create a counter that counts backwards from `10` to `1`? Let's add a while loop that executes only when ``||variables:count||`` is greater than `0`.
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```blocks
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let count = 0;
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while (count < 10) {
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basic.pause(100);
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basic.showNumber(count);
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count = count + 1;
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basic.pause(20);
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}
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while (count > 0) {
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}
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```
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## Challenge 2
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Inside of the while loop, let's add a ``||basic:pause||`` that waits for one seccond so that we have a pause between each number as it's counting down. Also, let's show ``||variables:count||``!
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```blocks
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let count = 0;
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while (count < 10) {
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basic.pause(100);
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basic.showNumber(count);
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count = count + 1;
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}
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while (count > 0) {
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basic.pause(100);
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basic.showNumber(count);
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}
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```
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* Run the code to see if it works as expected.
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## Challenge 3
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Now, we need ``||variables:count||`` to decrease by one after the @boardname@ has displayed the value of ``||variables:count||``.
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We can do this by adding this line:
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```blocks
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let count = 0;
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count = count + (count - 1);
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```
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