package main

import "fmt"

func walk(ch1, ch2 chan int) {
	fmt.Println("walk")

	fmt.Println("1")
	ch1 <- 2

	fmt.Println("2")
	y := <-ch2
	fmt.Println("y=", y)

	fmt.Println("3")
}

func loadWorker(ch1, ch2 chan int) {
	fmt.Println("loadWorker")

	fmt.Println("4")
	select {
	case x := <-ch1:
		fmt.Println("x=", x)
		fmt.Println("5")

		select {
		case ch2 <- x + 5:
			fmt.Println("6")
		}
	}
	fmt.Println("7")

}

func main() {
	ch1 := make(chan int)
	ch2 := make(chan int)

	go loadWorker(ch1, ch2)

	walk(ch1, ch2)

	fmt.Println("Done")
}