43 lines
777 B
Go
43 lines
777 B
Go
// For more tutorials: https://blog.learngoprogramming.com
|
|
//
|
|
// Copyright © 2018 Inanc Gumus
|
|
// Learn Go Programming Course
|
|
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
|
|
//
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strconv"
|
|
)
|
|
|
|
func main() {
|
|
ships := []string{"Normandy", "Verrikan", "Nexus", "Warsaw"}
|
|
|
|
fmt.Printf("%q\n\n", ships)
|
|
|
|
from, to := 0, len(ships)
|
|
|
|
switch poss := os.Args[1:]; len(poss) {
|
|
default:
|
|
fallthrough
|
|
case 0:
|
|
fmt.Println("Provide only the [starting] and [stopping] positions")
|
|
return
|
|
case 2:
|
|
to, _ = strconv.Atoi(poss[1])
|
|
fallthrough
|
|
case 1:
|
|
from, _ = strconv.Atoi(poss[0])
|
|
}
|
|
|
|
if l := len(ships); from < 0 || from > l || to > l || from > to {
|
|
fmt.Println("Wrong positions")
|
|
return
|
|
}
|
|
|
|
fmt.Println(ships[from:to])
|
|
}
|