Convert Base Number

xBase.go

// Program support xbase 2 - 10
package main

import (
    "fmt"
    "flag"
    "strconv"
    "os"
)

func StoN (Arg string) int {
    n, err := strconv.Atoi (Arg)
    if err != nil {
        os.Exit (0)
    }
    return n
}

func main () {
    flag.Parse ()
    // check argument flag
    if flag.NArg () == 0 {
        fmt.Println ("โปรดใส่เลขฐาน และจำนวนตัวเลข\n")
        os.Exit (1)
    }

    var xbase int = StoN (flag.Arg (0))
    var value int = StoN (flag.Arg (1)) 

    // check base value    
    if xbase < 2 {
        os.Exit (1)
    }

    for i := 0; i <= value; i++ {
        if i < xbase || i / 10 > 0 && i / 10 < xbase && i % 10 < xbase {
            fmt.Println (i)
        } else if i / 10 == 10 && i % 10 < xbase {
            fmt.Println (i)
        }
    }


}