How to Write Loops in Rust

Rust provides three loop constructs: loop for infinite loops, while for condition-based repetition, and for for iterating over ranges or collections.

fn main() {
    // Infinite loop with break
    loop {
        println!("Running...");
        break;
    }

    // Condition-based loop
    let mut count = 0;
    while count < 3 {
        println!("Count: {count}");
        count += 1;
    }

    // Iterating over a range
    for number in 1..=3 {
        println!("Number: {number}");
    }
}

Loops let your code repeat actions automatically. Use loop when you need to run forever until you manually stop it, while when you want to keep going as long as a condition is true, and for when you need to go through a list of items one by one. Think of them like different ways to tell a robot to keep doing a task: "do it forever," "do it while the light is on," or "do it for every box on the shelf."