import "timer" for Timer
import "io" for Stdin, Stdout

System.write("Enter time to sleep in seconds: ")
Stdout.flush()
var secs
while (true) {
    secs = Num.fromString(Stdin.readLine())
    if (secs == null) {
        System.print("Not a number try again.")
    } else break
}
System.print("Sleeping...")
Timer.sleep((secs*1000).floor)
System.print("Awake!")