package main

import "fmt"

func worker(id int,jobs chan int,results chan int) {
        for j := range jobs {
                fmt.Println("worker",id,"procesing job",j)
                results <- j * 2
        }
}

func main() {
        job    := make(chan int,100)
        result := make(chan int,200)

        for w := 1; w <=3; w++ {
                go worker(w,job,result)
        }

        for j := 1; j <= 9; j++ {
                job <- j
        }

        for a := 1; a <= 9; a++ {
                fmt.Println(<-result)
        }
}