Struct declaration syntax in Swift - Mini Project: Build & Apply

Struct declaration syntax

📖 Scenario: Imagine you are creating a simple app to keep track of books in a library. Each book has a title and an author.

🎯 Goal: You will create a struct in Swift to represent a book with its title and author, then create an instance and print its details.

📋 What You'll Learn

Declare a struct named Book with two properties: title and author, both of type String.

Create a variable called myBook that is an instance of Book with the title "1984" and author "George Orwell".

Print the book's title and author in the format: "Title: 1984, Author: George Orwell".

💡 Why This Matters

🌍 Real World

Structs are used to group related data together, like information about a book, a user, or a product in apps.

💼 Career

Understanding struct declaration is essential for Swift developers building iOS or macOS apps to organize data cleanly and safely.

1

Create the Book struct

Declare a struct called Book with two properties: title and author, both of type String.

Swift

# Declare the struct Book with title and author properties
// Your code here

Need a hint?

Use struct Book {} and inside add var title: String and var author: String.

2

Create an instance of Book

Create a variable called myBook that is an instance of Book with the title "1984" and author "George Orwell".

Swift

struct Book {
    var title: String
    var author: String
}

// Create myBook instance here
// Your code here

Need a hint?

Use var myBook = Book(title: "1984", author: "George Orwell") to create the instance.

3

Print the book details

Write a print statement to display the book's title and author in the format: "Title: 1984, Author: George Orwell" using myBook.

Swift

struct Book {
    var title: String
    var author: String
}

var myBook = Book(title: "1984", author: "George Orwell")

// Print book details here
// Your code here

Need a hint?

Use string interpolation with print("Title: \(myBook.title), Author: \(myBook.author)").

4

Run the program to see the output

Run the program and check that it prints exactly: Title: 1984, Author: George Orwell.

Swift

struct Book {
    var title: String
    var author: String
}

var myBook = Book(title: "1984", author: "George Orwell")

print("Title: \(myBook.title), Author: \(myBook.author)")

// Run the program to see the output

Need a hint?

Make sure your print statement matches the exact output.