41 lines
1.4 KiB
Markdown
41 lines
1.4 KiB
Markdown
# looper quiz answers
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Learn how to create a series of numbers with a for loop. #LED #screen #plot #docs
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This is the answer key for the [looper quiz](/microbit/lessons/looper/quiz).
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## 1. What is a for loop?
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Answers will vary. In general, for loop refers to the code that repeats for a fixed number of times. We specify the LED using x, y coordinates.
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## 2. Consider the following code
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```blocks
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for (let i = 0; i < 4; i++) {
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basic.showNumber(i, 150)
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}
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```
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If the rectangle below represents the BBC micro:bit, shade the areas that will be displayed. Explain why that particular area is shaded.
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Let's create a for loop where `0` is the loop's starting value, `i` is the index variable, and `4` is the ending value. The index variable `i` starts at 0 and increases by 1 each time through the loop. The loop ends when `i = 4`.
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## 3. Consider the following code
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```blocks
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for (let i1 = 0; i1 < 6; i1++) {
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basic.showNumber(i1, 150)
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}
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```
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If the rectangle below represents the BBC micro:bit, shade the areas that will be displayed. Explain why that particular area is shaded.
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Let's create a for loop where `0` is the loop's starting value, `i` is the index variable, and `6` is the ending value. The index variable `i` starts at 0 and increases by 1 each time through the loop. The loop ends when `i = 6`.
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