package main

import (
	"fmt"
	"os"
	"time"
)


func launch() {
	fmt.Println("To abort launch press Enter")
	for i:=10;i >=0; i-- {
		fmt.Printf("%d...\n",i)
	}
}

func main() {
	abort := make(chan struct{})

	go func() {
		os.Stdin.Read(make([]byte,1))
		abort <- struct{}{}
	}()

	tick := time.Tick(1*time.Second)

	for i:=10; i>=0; i-- {
		fmt.Printf("%d...\n",i)
		select {
			case <-tick:
			case <- abort:
				fmt.Println("Launch cancelled")
				return
		}
	}
}