package main

import (
    "fmt"
)

func itob(i int) string {
    var buf [64]byte
    j := len(buf)
    b := 2
    for i > 0 {
        j--
        buf[j] = "0123456789abcdefghipqrstuvwxyz"[i%b]
        i /= b
    }

    return string(buf[j:])
}


func main() {
    var i int
    fmt.Print("please enter a number: ")
    fmt.Scan(&i)
    fmt.Printf("%d as a binary: %s\n", i, itob(i))
}