43 lines
687 B
Go
43 lines
687 B
Go
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// For more tutorials: https://blog.learngoprogramming.com
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//
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// 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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package main
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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)
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const usage = `
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Feet to Meters
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--------------
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This program converts feet into meters.
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Usage:
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feet [feetsToConvert]`
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func main() {
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if len(os.Args) < 2 {
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fmt.Println(strings.TrimSpace(usage))
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return
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}
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arg := os.Args[1]
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feet, err := strconv.ParseFloat(arg, 64)
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if err != nil {
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fmt.Printf("error: '%s' is not a number.\n", arg)
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return
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}
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meters := feet * 0.3048
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fmt.Printf("%g feet is %g meters.\n", feet, meters)
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}
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