20.Select

package main
import "fmt"
func fibonacii(c,quit chan int)  {
    x,y :=1,1
    for  {
        select {
        //如果c可写,则case就会进来
        case c <- x:
            t := x
            x = y
            y = t + y
        case <-quit:
            fmt.Println("quit")
            return
        }
    }
}
func main() {
    c:=make(chan int)
    quit := make(chan int)
    go func() {
        for i := 0; i < 6; i++ {
            fmt.Println(<-c)
        }
        quit <- 0
    }()
    fibonacii(c,quit)
}