RUST Free Section Starter Challenge 40 min

5. Structs & Method Implementations (impl)

Overview: Organize data and behavior in Rust with custom structs and impl blocks, using &self for safe method calls.

Concept & Syntax Guide

In Rust, structs hold data while `impl` blocks define associated functions and methods. Borrowing `&self` guarantees memory safety without garbage collection overhead.

Hands-On Practice Exercise

Calculate Bounding Box Area in Rust

Define a `Rectangle` struct with `width: u32` and `height: u32`. Implement a method `area(&self) -> u32`. Create an instance and print the area.

Target Output: Rectangle Area: 1500

Need a hint? Click here to reveal

Hint: Check syntax carefully and make sure your code contains: Rectangle Area: 1500

RUST Code Editor

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struct Rectangle {
    width: u32,
    height: u32,
}

impl Rectangle {
    fn area(&self) -> u32 {
        self.width * self.height
    }
}

fn main() {
    let rect = Rectangle { width: 30, height: 50 };
    println!("Rectangle Area: {}", rect.area());
}