package main

import (
	"fmt"
	"time"
)

func main() {
	ch := make(chan int)
	quit := make(chan bool)
	go func() {
		for {
			select {
			case num := <-ch:
				fmt.Println("num", num)
			case <-time.After(3 * time.Second):
				quit <- true
				break
			}
		}
	}()
	for i := 0; i < 5; i++ {
		ch <- i
		time.Sleep(1*time.Second)
	}
	<-quit
	fmt.Println("结束____")
}