doc: french doc "développez en Nit"

[nit.git] / doc / developpez / poo / listings / polymorphisme1_c.nit

abstract class Forme 
        fun aire :Float is abstract
end
 
class Carre
        super Forme

        var cote: Float

        init(c: Float) 
        do
                cote = c
        end

        redef fun aire: Float 
        do
                return cote * cote
        end
end
 
class Cercle
        super Forme
   
        var rayon: Float

        init (r: Float) 
        do
                rayon = r
        end

        redef fun aire: Float 
        do
                return  pi * rayon * rayon
        end
end

var forme: Forme

forme = new Carre(10.0)
print forme.aire # Affiche "100"

forme = new Cercle(10.0)
print forme.aire # Affiche "314.15"