package main

import (
	"fmt"
)


type Animal struct {
	Name string  
	Sex string
}


func (a *Animal)Talk(){
	fmt.Printf("Animal is talk, i'm %s\n", a.Name)
}
func (a *Animal)Eat(){
	fmt.Println("dog Animal is eat")
}


type PuruAnimal  struct{}

type Dog  struct{
	Feet string
	//Animal         // 值类型
	*Animal          // 指针类型
	*PuruAnimal      // 指针类型
}


func (p *PuruAnimal)Talk(){
	fmt.Println("puru dongwu is talking\n")
}

func (p *PuruAnimal)Walk(){
	fmt.Println("puru dongwu is walking\n")
}


func (d *Dog)Talk(){
	fmt.Printf("dog %s is talking\n",d.Name)
}


func (d *Dog)Eat(){
	fmt.Printf("dog %s is eat\n",d.Name)
}


func main(){
	var d *Dog = &Dog{
		Feet:"four feet",
		Animal:&Animal{
			Name:"旺财",
			Sex:"公",
		},
		PuruAnimal:&PuruAnimal{},
	}

	d.Eat()
	d.Talk()
	d.Name = "小黑"
	d.Sex ="公"
	d.Eat()
	d.Talk()

	d.Animal.Talk()
	d.PuruAnimal.Talk()
	d.Talk()
	d.Walk()
}

输出:

dog 旺财 is eat
dog 旺财 is talking
dog 小黑 is eat
dog 小黑 is talking
Animal is talk, i'm 小黑
puru dongwu is talking

dog 小黑 is talking
puru dongwu is walking