package main

import "fmt"

var stream = make(chan int, 10)
const n = 4

func produce() {
    for i := 0; ; i++ {
        fmt.Println("produce", i)
        stream <- i
    }
}

func consume() {
    for {
        x := <-stream
        fmt.Println("consume", x)
    }
}

func main() {
    for i := 0; i < n; i++ {
        go produce()
    }
    consume()
}