## 创建 test.go ~~~ package main import ( "fmt" "time" ) func say(s string) { // 循环5次 for i := 0; i < 5; i++ { // 协程休眠1秒 time.Sleep(1000 * time.Millisecond) // 打印字符串s fmt.Println(s) } } func main() { go say("wk") say("jj") } ~~~ ## 运行 test.go ~~~ go run test.go ~~~