37 lines
534 B
Go
37 lines
534 B
Go
package main
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import "fmt"
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// 定义接口（可发声的物体）
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type Sounder interface {
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MakeSound() string
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}
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// 狗实现Sounder接口
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type Dog struct{}
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func (d Dog) MakeSound() string {
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return "汪汪"
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}
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// 猫实现Sounder接口
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type Cat struct{}
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func (c Cat) MakeSound() string {
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return "喵喵"
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}
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// 多态：接收Sounder接口，调用不同实现
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func animalSound(s Sounder) {
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fmt.Println(s.MakeSound())
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}
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func main() {
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var s Sounder
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s = Dog{}
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animalSound(s) // 汪汪
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s = Cat{}
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animalSound(s) // 喵喵
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}
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