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38 lines
530 B

package main
import (
"fmt"
"os"
"strconv"
correct ".."
)
func NRune(s string, n int) rune {
if n > len(s) || n < 1 {
return 0
}
runes := []rune(s)
return runes[n-1]
}
func main() {
if len(os.Args) != 3 {
return
}
val, err := strconv.Atoi(os.Args[2])
if err != nil {
fmt.Printf("\"%s\" is not an integer value\n", os.Args[2])
return
}
rune := correct.NRune(os.Args[1], val)
if rune == 0 {
fmt.Printf("Invalid position: \"%d\" in \"%s\"\n", val, os.Args[1])
return
}
fmt.Printf("%c\n", rune)
}