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. }