76 lines
1.5 KiB
Markdown
76 lines
1.5 KiB
Markdown
# looper challenges
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Coding challenges for the looper tutorial. #docs
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## Before we get started
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Complete the following guided tutorial:
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* [tutorial](/lessons/looper/tutorial)
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At the end of the tutorial, click `keep editing`. Your code should look like this:
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```
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for (let i = 0; i < 6; i++) {
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basic.showNumber(i, 150)
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basic.pause(2000)
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}
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```
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### Challenge 1
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What if we want to count up to lucky number 7 instead? Let's do that by changing the ending value to `8` instead of `6`.
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```
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for (let i1 = 0; i1 < 8; i1++) {
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basic.showNumber(i1, 150) // ***
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basic.pause(2000)
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}
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```
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* Run the program now to see your changes.
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### Challenge 2
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What about 9? Let's do that by changing the ending value to `10`.
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```
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for (let i2 = 0; i2 < 10; i2++) {
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basic.showNumber(i2, 150)
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basic.pause(2000)
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}
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```
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* Run your code to see the new counter.
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### Challenge 3
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Now let's start counting from `3` instead! Our for loop will always start at `0` so we simply add `3` to the `i` variable when passing it to `basic->show number`.
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```
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for (let i3 = 0; i3 < 8; i3++) {
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basic.showNumber(i3 + 3, 150) // ***
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basic.pause(2000)
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}
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```
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Run it on the simulator!
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### Challenge 4
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Now, let's **count down from 9**. Change the line `basic->show number(i + 3, 150)` to `basic->show number(9 - i, 150)`.
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```
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for (let i4 = 0; i4 < 10; i4++) {
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basic.showNumber(9 - i4, 150) // ***
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basic.pause(2000)
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}
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```
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* Run the code to make sure it is doing what is expected.
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### Challenge 5
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After counting down from `9` let's show the string `BOOOM`!
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