80 lines
2.0 KiB
Markdown
80 lines
2.0 KiB
Markdown
# compare machine challenges
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These challenges allow you to set the value of a counter to 1 when button B is pressed. #docs
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### Challenge 0
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Welcome! This [guided tutorial](/lessons/comparison/tutorial) will assist you with using the comparison operator.
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```
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counter = 0
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input.onButtonPressed(Button.A, () => {
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counter = counter + 1
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if (counter == 10) {
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counter = 1
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}
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basic.showNumber(counter, 150)
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})
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```
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### Challenge 1
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Now let's do something special when the @boardname@ reaches the number `5`. Instead of just showing the number `5`, let's show the string `HALF WAY!`. Begin by setting an if statement to know when `counter = 5`.
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```
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counter = 0
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input.onButtonPressed(Button.A, () => {
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counter = counter + 1
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if (counter == 10) {
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counter = 1
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}
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if (counter == 5) {
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}
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basic.showNumber(counter, 150)
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})
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```
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### Challenge 2
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Let's continue our plan of displaying `HALF WAY!` when `counter = 5`. To do so, add the following line of code inside the if statement.
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```
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counter = 0
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input.onButtonPressed(Button.A, () => {
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counter = counter + 1
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if (counter == 10) {
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counter = 1
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}
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if (counter == 5) {
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basic.showString("HALF WAY!", 150) // ***
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}
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basic.showNumber(counter, 150)
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})
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```
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* Run your code to see if it works as expected.
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### Challenge 3
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You may notice a problem right now. When `counter = 5`, the @boardname@ will show both the message `HALF WAY!` and the number `5`. In order to fix this problem, let's take advantage of the `else` at the end of the if statement.
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```
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counter = 0
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input.onButtonPressed(Button.A, () => {
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counter = counter + 1
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if (counter == 10) {
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counter = 1
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}
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if (counter == 5) {
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basic.showString("HALF WAY!", 150)
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} else {
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basic.showNumber(counter, 150) // ***
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}
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})
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```
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### Challenge 4
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When `counter = 8`, display the message `ALMOST THERE!` on the @boardname@. You will need to add an `else if` after the if statement of `counter = 5`.
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