hello1.rs

use std::time::Instant;

fn main(){
let now = Instant::now();
  
let mut n = 1; 
let mut x:i128 = 5;

while n < 99000000 {
x = 999 * 999;
n += 1;
} 
  
println!("{}\n", now.elapsed().as_millis());
println!("{}", x);

}