Formatted Print

Use format!, print!, and println! macros for formatted output.

Difficulty

Beginner

Code

fn main() {
    println!("{} days", 31);
    println!("{}, this is {1}. {0}, meet {1}", "Alice", "Bob");
    println!("{name} => {value}", name = "key", value = 42);
    println!("{:b} {:o} {:x}", 10, 10, 10);
    println!("{:.3}", 3.14159);
}

Explanation

Rust provides formatting macros: println!, format!, print!. Use {} for placeholders, {:?} for debug output.

Key Concepts

• Read the code carefully and understand the data flow
• Try modifying the example to see how it changes behavior
• Run this code in the Rust Playground

Related Topics

Browse more examples in the basics category to build a complete understanding of this topic.