下面这段代码输出什么？为什么？
type People interface {
Speak(string) string
}
type Student struct{}
func (stu *Student) Speak(think string) (talk string) {
if think == "speak" {
talk = "speak"
} else {
talk = "hi"
}
return
}
func main() {
var peo People = Student{}
think := "speak"
fmt.Println(peo.Speak(think))
}
- A. speak
- B. compilation error
