golang中结构体的嵌套、方法的继承、方法的重写

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package main   import "fmt"   type human struct {     name, phone string     age         int8 } type student struct {     human  // 嵌套结构体     school string } type employee struct {     human     company string }   func (h human) sayHi() {     fmt.Printf("我叫%s,今年%d，联系方式%s\n", h.name, h.age, h.phone) } // 方法的重写 func (s student) sayHi() {     fmt.Printf("我叫%s,我是%s的,今年%d，联系方式%s\n", s.name, s.school, s.age, s.phone) }   func main() {     h1 := human{name: "zs", age: 18, phone: "1365434789"}     h1.sayHi()       // 方法的继承     s1 := student{school: "一种", human: human{name: "lisi", age: 88, phone: "123456789"}}     s1.sayHi()   }