40 lines
467 B
Go
40 lines
467 B
Go
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package main
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import "fmt"
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type cat struct{}
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type dog struct{}
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type person struct {
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}
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type speaker interface {
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speak() //只要实现了speak方法的变量都是speaker类型
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}
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func (c cat) speak() {
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println("喵喵喵！")
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}
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func (d dog) speak() {
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println("汪汪汪")
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}
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func (p person) speak() {
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fmt.Println("aaa")
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}
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func da(x speaker) {
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x.speak() //挨打了就要叫
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}
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func main() {
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var c1 cat
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var d1 dog
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var e1 person
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da(c1)
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da(d1)
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da(e1)
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}
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