go语言初始化内部结构体3中方式

 package main
 
 import (
     "fmt"
 )
 
 type User struct {
     Id   int
     Name string
     Age  int
 }
 
 type Manger struct {
     User
     title string
 }
 
 func main() {
     m := Manger{User:User{, "ok", }, title:""}  //可以
     m2 := Manger{User{, "ok", }, ""}  //可以
     m3 := Manger{User:User{Id:, Name:"ok", Age:}, title:""}  //可以
 
     fmt.Println(m)
     fmt.Println(m2)
     fmt.Println(m3)
 
 }