package main

import "fmt"

func main()  {

    var age int
    fmt.Println(age)

    var name string
    fmt.Println(name)

    var status bool
    fmt.Println(status)
}

    first_name := "zhang"
    fmt.Println(first_name)

type User struct {
    name string
    age int
    sex bool
}

package main

import "fmt"

type User struct {
    name string
    age int
    sex bool
}

func main()  {

    // 第一种复制方式，键值对复制
    user := User{
        name: "张三",
        age:  12,
        sex:  true,
    }
    fmt.Println(user)

    // 第二种复制方式，按照顺序复制
    user_1 := User{"张三",12,true}
    fmt.Println(user_1)
}

package main

import "fmt"

type User struct {
    name string
    age int
    sex bool
}

type Admin struct {
    user User
    account string
    password string
    login_status bool
}

func main()  {
    user := User{
        name: "张三",
        age:  12,
        sex:  true,
    }

    admin := Admin {
        user : user,
        account : "admin",
        password : "admin",
        login_status: false,
    }

    fmt.Println(admin.user.name)
    fmt.Println(admin.user.age)
    fmt.Println(admin.user.sex)
    fmt.Println(admin.account)
    fmt.Println(admin.password)
    fmt.Println(admin.login_status)
}