Assignment operators in Rust - Mini Project: Build & Apply

Assignment operators

📖 Scenario: You are managing a small shop's inventory. You want to update the stock counts quickly using assignment operators.

🎯 Goal: Learn how to use assignment operators like +=, -=, *=, and /= in Rust to update variables efficiently.

📋 What You'll Learn

Create variables with initial stock counts

Create a variable for the number of items sold

Use assignment operators to update stock counts

Print the final stock counts

💡 Why This Matters

🌍 Real World

Assignment operators help update values quickly in programs like inventory management, budgeting apps, or games.

💼 Career

Understanding assignment operators is essential for writing clean and efficient code in any programming job.

1

Create initial stock variables

Create three variables called apples, bananas, and oranges with values 50, 30, and 20 respectively.

Rust

# Your code here

Need a hint?

Use let mut to create variables that can change later.

2

Create a variable for sold items

Create a variable called sold and set it to 5 to represent items sold.

Rust

let mut apples = 50;
let mut bananas = 30;
let mut oranges = 20;
# Your code here

Need a hint?

This variable does not need to change, so no mut needed.

3

Update stock using assignment operators

Use assignment operators to subtract sold from apples and bananas, and multiply oranges by 2.

Rust

let mut apples = 50;
let mut bananas = 30;
let mut oranges = 20;
let sold = 5;
# Your code here

Need a hint?

Use -= to subtract and *= to multiply and assign.

4

Print the final stock counts

Print the values of apples, bananas, and oranges using println! with the format: "Apples: {}", "Bananas: {}", and "Oranges: {}".

Rust

let mut apples = 50;
let mut bananas = 30;
let mut oranges = 20;
let sold = 5;
apples -= sold;
bananas -= sold;
oranges *= 2;
# Your code here

Need a hint?

Use println!("Text: {}", variable); to print variables with text.