49 lines
1.2 KiB
Markdown
49 lines
1.2 KiB
Markdown
# offset image quiz answers
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shift an image horizontally across the display with offset #offset #screen #variables #docs
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This is the answer key for the [offset image quiz](/microbit/lessons/offset-image/quiz).
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## 1. What is a 'if, then, else statement' ?
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<br/>
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An if-then statement will run a block of code if the condition specified is true. The statement will run the "else" block of code if that condition is false.
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## 2. Consider the message
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Write the line of code that that will create the message "Push button A" (Hint: This message appears `if` the offset is equal -4 then the BBC micro:bit will state "Push Button A").
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<br/>
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```
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if (offset == -4) {
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basic.showString("Push Button A", 150)
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}
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```
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## 3. Consider the following image
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When with this image be displayed?
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<br/>
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When the offset is NOT equal to -4 then the BBC micro:bit will show the image above.
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## 4. Consider the following image
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Write the two lines of code that cause the `variable` offset to increase by one when button `A` is pressed.
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<br/>
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```
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input.onButtonPressed(Button.A, () => {
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offset = offset + 1
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})
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```
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