43 lines
777 B
Go
43 lines
777 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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)
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func main() {
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ships := []string{"Normandy", "Verrikan", "Nexus", "Warsaw"}
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fmt.Printf("%q\n\n", ships)
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from, to := 0, len(ships)
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switch poss := os.Args[1:]; len(poss) {
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default:
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fallthrough
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case 0:
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fmt.Println("Provide only the [starting] and [stopping] positions")
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return
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case 2:
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to, _ = strconv.Atoi(poss[1])
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fallthrough
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case 1:
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from, _ = strconv.Atoi(poss[0])
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}
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if l := len(ships); from < 0 || from > l || to > l || from > to {
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fmt.Println("Wrong positions")
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return
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}
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fmt.Println(ships[from:to])
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}
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