Go Nested Structures

Last Updated : July 22, 2025

In Go, nested structures refer to the concept of defining one struct type within another.

Defining Nested Structures

You can nest one struct inside another by declaring a struct as a field within another struct.

Example

The following example demonstrates how to define and use a nested struct in Go:

package main
import "fmt"

type Address struct {
    city    string
    pincode int
}

type Employee struct {
    name    string
    age     int
    address Address
}

func main() {
    emp := Employee{
        name: "Raj",
        age:  28,
        address: Address{
            city:    "Mumbai",
            pincode: 400001,
        },
    }

    fmt.Println("Name:", emp.name)
    fmt.Println("City:", emp.address.city)
    fmt.Println("Pincode:", emp.address.pincode)
}

When you run the above code, the output will be:

Name: Raj
City: Mumbai
Pincode: 400001

Anonymous Nested Struct

You can also define anonymous nested structs within another struct without creating a named type for the inner struct.

Example

The following example demonstrates how to define and access a nested structure in Go, where one structure is embedded within another:

package main
import "fmt"

type Student struct {
    name string
    marks struct {
        maths    int
        science  int
    }
}

func main() {
    var s Student
    s.name = "Sneha"
    s.marks.maths = 85
    s.marks.science = 90

    fmt.Println("Name:", s.name)
    fmt.Println("Maths Marks:", s.marks.maths)
    fmt.Println("Science Marks:", s.marks.science)
}

When you run the above code, the output will be:

Name: Sneha
Maths Marks: 85
Science Marks: 90