async-golang-channels.go

package main

import (
	"fmt"
	"time"
)

var c = make(chan int)

func factorial(name string, number int) {
	var f = 1

	for i := 2; i < number+1; i++ {
		fmt.Printf("Task %s: Compute factorial(%d)...\n", name, i)
		time.Sleep(time.Second * 1)
		f *= i
	}
	fmt.Printf("Task %s completed: factorial(%d) = %d\n", name, number, f)
	c <- f
}

func main() {
	go factorial("A", 8)
	go factorial("B", 3)
	for i := 0; i < 2; i++ {
		<-c
	}
}

could this be done without globally defining c ?
with something like a pointer to the channel ?