12. 结构体

package main

import (
    "fmt"
)

type User struct {
    username string
    password string
    age int
}

func main() {
    var user User
    user.username = "root"
    user.password = "123456"
    user.age = 15
    fmt.Println(user)

    user2 := User{
        username: "admin",
        password: "123456",
        age: 16,
    }
    fmt.Println(user2)

    user3 := User{"nomal","123456",18}
    fmt.Println(user3)
}