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@dlecan dlecan/main.rs
Created Dec 13, 2016

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use std::env;
struct Division {
numerateur: i32,
denominateur: i32,
}
impl Division {
fn new(x: i32, y: i32) -> Division {
Division {
numerateur: x,
denominateur: y,
}
}
fn calculer(&self) -> i32 {
match self.denominateur {
0 => panic!("Division par 0"),
1 => self.numerateur,
_ => self.numerateur / self.denominateur
}
}
}
trait HasSymbol {
fn symbol(&self) -> String;
}
impl HasSymbol for Division {
fn symbol(&self) -> String {
"/".to_string()
}
}
fn main() {
let numerateur = match env::args().nth(1) {
Some(argument) => argument,
None => panic!("Argument obligatoire manquant : le numérateur")
};
let numerateur = match numerateur.parse::<i32>() {
Ok(numerateur) => numerateur,
Err(error) => panic!("Impossible de convertir notre argument. Raison: {}", error)
};
let division = Division::new(numerateur, 2);
display_symbol(division);
let resultat = division.calculer();
println!("Résultat : {}", resultat);
}
fn display_symbol(division: Division) {
println!("Symbole: {}", division.symbol());
}
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