Overview

A struct can have another struct nested in it. Let’s see an example of a nested struct. In below example employee struct has the address struct nested it in.

type address struct {
    city    string
    country string
}

type employee struct {
    name    string
    age     int
    salary  int
    address address
}

To initialize such kind of struct we need to initialize the nested struct first. That is first we will initialize the address struct. For eg as below

address := address{city: "London", country: "UK"}

Then we can initialize the employee struct as below

emp := employee{name: "Sam", age: 31, salary: 2000, address: address}

Another way is to directly initialize the address struct during the initialization of the employee struct. Like as below

emp := employee{name: "Sam", age: 31, salary: 2000, address: address{city: "London", country: "UK"}}

Program

package main

import "fmt"

type employee struct {
    name    string
    age     int
    salary  int
    address address
}

type address struct {
    city    string
    country string
}

func main() {
    address := address{city: "London", country: "UK"}
    emp := employee{name: "Sam", age: 31, salary: 2000, address: address}
    fmt.Printf("City: %s\n", emp.address.city)
    fmt.Printf("Country: %s\n", emp.address.country)
}

Output

City: London
Country: UK