while

The while keyword can be used to loop until a condition is met.

Let’s write the infamous FizzBuzz using a while loop.

1. fn main() {
2. // A counter variable
3. let mut n = 1;

5. // Loop while `n` is less than 101
6. while n < 101 {
7. if n % 15 == 0 {
8. println!("fizzbuzz");
9. } else if n % 3 == 0 {
10. println!("fizz");
11. } else if n % 5 == 0 {
12. println!("buzz");
13. } else {
14. println!("{}", n);
15. }

17. // Increment counter
18. n += 1;
19. }
20. }