初學go時的問題 panic: runtime error: invalid memory address or nil pointer dereference

panic: runtime error: invalid memory address or nil pointer dereference

場景：在做練習時遇到了指針的問題，沒有給指針分配地址，就直接給指針賦值

Q:定義結構體 Address 和 VCard，后者包含一個人的名字、地址編號、出生日期和圖像，試着選擇正確的數據類型。構建一個自己的 vcard 並打印它的內容。

代碼

package main

import (
    "fmt"
)

type Address struct {
    localId int
    street string
    phone string
}

type VCard struct {
    name string
    address *Address
    birth string
}

func main() {
    var VCard1 VCard
    VCard1.name = "Tim"
    //要在給VCard1.address.localId賦值之前，給VCard1.address分配地址
    VCard1.address = new(Address)
    VCard1.address.localId = 12
    VCard1.address.street = "hexing Road"
    VCard1.address.phone = "13517086342"
    VCard1.birth = "1993/09/14"

    fmt.Printf(VCard1.name)
}