Creating struct values in Go - Try It Yourself

Creating struct values

📖 Scenario: You are building a simple program to store information about a book in a library system.

🎯 Goal: Create a struct to represent a book and then create a value of that struct with specific details.

📋 What You'll Learn

Define a struct type named Book with fields Title (string), Author (string), and Year (int).

Create a variable named myBook of type Book with the exact values: Title = "The Go Programming Language", Author = "Alan A. A. Donovan", Year = 2015.

Print the myBook variable to display its contents.

💡 Why This Matters

🌍 Real World

Structs are used to group related data together, like storing information about books, users, or products in real applications.

💼 Career

Understanding structs is essential for Go programming jobs, as they are the foundation for creating complex data models.

1

Define the Book struct

Define a struct type called Book with three fields: Title of type string, Author of type string, and Year of type int.

Go

package main

type Book struct {
    // Define Title, Author, and Year fields here
}

func main() {

}

Hint

Use the type keyword to define a struct. Each field has a name and a type.

2

Create a Book value

Inside the main function, create a variable named myBook of type Book and assign it the values: Title = "The Go Programming Language", Author = "Alan A. A. Donovan", and Year = 2015.

Go

package main

type Book struct {
    Title  string
    Author string
    Year   int
}

func main() {
    // Create myBook variable with the given values
}

Hint

Use the struct literal syntax with field names to assign values.

3

Print the Book value

Add a fmt.Println statement inside main to print the myBook variable.

Go

package main

import "fmt"

type Book struct {
    Title  string
    Author string
    Year   int
}

func main() {
    myBook := Book{
        Title:  "The Go Programming Language",
        Author: "Alan A. A. Donovan",
        Year:   2015,
    }
    // Print myBook variable
}

Hint

Use fmt.Println to display the struct value.

4

Run and see the output

Run the program and observe the printed output showing the myBook struct with its field values.

Go

package main

import "fmt"

type Book struct {
    Title  string
    Author string
    Year   int
}

func main() {
    myBook := Book{
        Title:  "The Go Programming Language",
        Author: "Alan A. A. Donovan",
        Year:   2015,
    }
    fmt.Println(myBook) // Run and check output
}

Hint

The output should show the struct fields and their values inside curly braces.