Function main

golang/go-study/go语言基础/并发/goroutine/启动多个goroutine.go:15–21

()

}

func main() {
	for i := 0; i < 10; i++ {
		wg2.Add(1) //	启动一个goroutine就登记+1
		go hello2(i)
	}
	wg2.Wait() // 等待所有登记的goroutine都结束
}