use std::io;
use std::io::Write;
use std::thread;
use std::time::Duration;

fn main() {
    let mut height = String::new();
    let mut weight = String::new();

    println!("Kalkulator BMI, witamy!");
    thread::sleep(Duration::from_secs(1));

    print!("Wpisz swój wzrost: ");
    io::stdout().flush().unwrap(); // Make input in same line as print
    io::stdin().read_line(&mut height).expect("Failed to read line");
    let height: f32 = height.trim().parse().unwrap();

    print!("Wpisz teraz swoją wagę: ");
    io::stdout().flush().unwrap(); // Make input in same line as print
    io::stdin().read_line(&mut weight).expect("Failed to read line");
    let weight: f32 = weight.trim().parse().unwrap();

    let bmi: f32 = weight / (height / 100.0).powf(2.0) as f32;
    println!("Twoje BMI: {bmi:.1}");
}