Petits Ronds Exercice 46 -109

//Ex 46 petits ronds
#include <iostream>
#include <cmath> //M_PI
using namespace std;
class Cercle {
    public:
    Cercle (float rayon=1,float x=1,float y=1);
    double surface ()const ;
    void getCentre (double &x,double &y) const;
    void setCentre (double x,double y) ;

    bool estInterieur(double x,double y)const;
    bool estInterieur(Cercle c)const;

    void affiche();

    private:
    double _rayon,_x,_y;
};
Cercle::Cercle (float rayon ,float x,float y):_rayon (rayon),_x(x),_y(y) {};
double Cercle::surface ()const {return M_PI* pow(_rayon,2);}

void Cercle::getCentre (double &x,double &y) const{x=_x;y=_y;}
void Cercle::setCentre (double x,double y) {_x=x;_y=y;}
bool Cercle::estInterieur(double x,double y)const{

    double tmp=sqrt (pow((_x-x),2)+(pow((_y-y),2))) ;
    if (tmp<=_rayon){return true;}

    return false;
}
bool Cercle::estInterieur(Cercle c)const{
    return estInterieur(c._x,c._y);
};
void Cercle::affiche(){
    cout << "rayon="<<_rayon<<",x="<<_x<<",y="<<_y<<endl;
}

int main(){
    Cercle c,a(1,0.5,0.5),d(1,1.1,1.1),e(1,2,2),f(2,2);
    cout <<"surface="<<c.surface()<<endl;

    cout <<c.estInterieur(1.1,0.5)<<endl;
    cout <<c.estInterieur(a)<<endl;
    cout <<c.estInterieur(d)<<endl;
    cout <<c.estInterieur(e)<<endl;
    cout <<c.estInterieur(f)<<endl;

    Cercle x;
    x.setCentre (2,4);
    x.affiche ();

return 0;
}