main.rs

use std::io;

fn main() {
    let mut stdin = io::stdin();
    let input = &mut String::new();

    input.clear();
    println!("Specific impulse: ");
    stdin.read_line(input).unwrap();
    let specific_impulse = input.trim().parse::<i32>().unwrap();
    input.clear();
    println!("Total mass (tons): ");
    stdin.read_line(input).unwrap();
    let total_mass = input.trim().parse::<i32>().unwrap();
    input.clear();
    println!("Dry mass (tons): ");
    stdin.read_line(input).unwrap();
    let dry_mass = input.trim().parse::<i32>().unwrap();
    let delva_v = (9.81 * specific_impulse as f32) * (total_mass as f32 / dry_mass as f32).ln();
    println!("DeltaV: {}", delva_v);
}