Output using println macro in Rust - Mini Project: Build & Apply

Output using println macro

📖 Scenario: You are creating a simple Rust program that greets a user by name. This is like writing a friendly note to someone.

🎯 Goal: Build a Rust program that stores a name in a variable and then prints a greeting message using the println! macro.

📋 What You'll Learn

Create a variable called name with the exact value "Alice"

Create a variable called greeting with the exact value "Hello"

Use the println! macro to print the greeting and the name in the format: Hello, Alice!

💡 Why This Matters

🌍 Real World

Printing messages is the first step in many programs, like showing information or debugging.

💼 Career

Understanding how to output text is essential for any Rust developer to communicate with users or log data.

1

Create the name variable

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".

2

Create the greeting variable

Add a variable called greeting and set it to the string "Hello".

Rust

fn main() {
    let name = "Alice";
    # Create a variable called greeting and set it to "Hello"
    # Your code here
}

Need a hint?

Use let again to create the greeting variable with the value "Hello".

3

Use println! to print the greeting

Use the println! macro to print the message in the format: Hello, Alice! using the variables greeting and name.

Rust

fn main() {
    let name = "Alice";
    let greeting = "Hello";
    # Use println! to print "Hello, Alice!" using greeting and name
    # Your code here
}

Need a hint?

Use println!("{}, {}!", greeting, name); to insert variables into the output.

4

Print the final greeting

Run the program and print the greeting message using println!. The output should be exactly Hello, Alice!.

Rust

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

Need a hint?

Make sure the output matches Hello, Alice! exactly.