control_goroutines.go

func main() {
	naturals := make(chan int)
	squares := make(chan int)

	//Counter
	go func() {
		for x := 0; x < 10; x++ {
			naturals <- x
		}
		close(naturals)
	}()

	//Squarer
	go func() {
		for x := range naturals {
			squares <- x * x
		}
		close(squares)
	}()

	for s := range squares {
		fmt.Println(s)
	}
}