Writing first Rust program - Mini Project: Build & Apply

Writing first Rust program

📖 Scenario: You want to create a simple Rust program that greets a user by name. This is like writing a friendly note to someone, but using code.

🎯 Goal: Build a Rust program that stores a name, creates a greeting message using that name, and then prints the greeting.

📋 What You'll Learn

Create a variable to hold a name

Create a greeting message using the name

Print the greeting message

💡 Why This Matters

🌍 Real World

Greeting messages are common in apps and websites to welcome users personally.

💼 Career

Understanding how to create variables and print output is the first step in writing any Rust program.

1

Create a variable with a name

Create a variable called name and set it to the string "Alice".

Rust

# Create a variable called name and set it to "Alice"
# Your code here

Need a hint?

Use let to create a variable and assign the string "Alice" to it.

2

Create a greeting message

Create a variable called greeting that uses format! to combine the text "Hello, " with the variable name.

Rust

fn main() {
    let name = "Alice";
    // Create a greeting message using format! and name
    // Your code here
}

Need a hint?

Use format!("Hello, {}!", name) to create the greeting string.

3

Print the greeting message

Use println! to print the variable greeting.

Rust

fn main() {
    let name = "Alice";
    let greeting = format!("Hello, {}!", name);
    // Print the greeting
    // Your code here
}

Need a hint?

Use println!("{}", greeting); to show the greeting on the screen.

4

Run and see the greeting

Run the program and observe the output. It should print Hello, Alice!.

Rust

fn main() {
    let name = "Alice";
    let greeting = format!("Hello, {}!", name);
    println!("{}", greeting);
}

// Run the program to see the output

Need a hint?

Use cargo run or rustc to compile and run your program.