Using if as expression in Rust - Mini Project: Build & Apply

Using if as expression

📖 Scenario: You are building a simple program to decide if a person is an adult or a minor based on their age.

🎯 Goal: Create a Rust program that uses if as an expression to assign a message depending on the age.

📋 What You'll Learn

Create a variable age with the value 20

Create a variable status that uses if as an expression to assign "Adult" if age is 18 or more, otherwise "Minor"

Print the status variable

💡 Why This Matters

🌍 Real World

Using <code>if</code> as an expression helps write concise code for decisions like checking age limits.

💼 Career

Understanding expressions and conditional assignments is important for writing clean and efficient Rust code in real projects.

1

Create the age variable

Create a variable called age and set it to 20.

Rust

# Create a variable called age and set it to 20
# Your code here

Need a hint?

Use let age = 20; to create the variable.

2

Create the status variable using if as expression

Create a variable called status that uses if as an expression to assign "Adult" if age is 18 or more, otherwise assign "Minor".

Rust

fn main() {
    let age = 20;
    // Create status using if as expression
    // Your code here
}

Need a hint?

Use let status = if age >= 18 { "Adult" } else { "Minor" };.

3

Print the status variable

Add a println! statement to print the status variable.

Rust

fn main() {
    let age = 20;
    let status = if age >= 18 { "Adult" } else { "Minor" };
    // Print the status variable
    // Your code here
}

Need a hint?

Use println!("{}", status); to print the message.

4

Run the program to see the output

Run the program and observe the output. It should print Adult.

Rust

fn main() {
    let age = 20;
    let status = if age >= 18 { "Adult" } else { "Minor" };
    println!("{}", status);
}

// Run the program to see the output

Need a hint?

The program prints Adult because age is 20.