51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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// For more tutorials : https://learngoprogramming.com
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// In-person training : https://www.linkedin.com/in/inancgumus/
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// Follow me on twitter: https://twitter.com/inancgumus
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package main
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import (
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"fmt"
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)
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// ---------------------------------------------------------
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// EXERCISE: Circle Area
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//
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// Calculate the area of a circle from the given radius
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//
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// CIRCLE AREA FORMULA
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// area = πr²
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// https://en.wikipedia.org/wiki/Area#Circles
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//
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// HINT
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// For PI you can use `math.Pi`
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//
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// EXPECTED OUTPUT
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// radius: 10 -> area: 314.1592653589793
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//
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// BONUS EXERCISE!
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// 1. Print the area as 314.16
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// 2. To do that you need to use the correct Printf verb :)
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// Instead of `%g` verb below.
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//
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// EXPECTED OUTPUT
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// radius: 10 -> area: 314.16
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// ---------------------------------------------------------
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func main() {
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var (
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radius = 10.
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area float64
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)
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// ADD YOUR CODE HERE
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// ...
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// DO NOT TOUCH THIS
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fmt.Printf("radius: %g -> area: %g\n", radius, area)
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}
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