int main()
{
        float a, b, x;
        
        std::cout << "Cet algorithme calcule les solutions de l'équation a*x+b=0" << std::endl;
        std::cout << "Entrez a:";
        std::cin >> a;
        std::cout << "Entrez b:";
        std::cin >> b;

        if (a != 0)
        {
                x = -b / a;
                std::cout << "Resultat: x =" << x << std::endl;
                std::cout << "Verification: " << a <<"*"<<x<<"+"<<b<<"=0"<< std::endl;
        }
        else           // ici a = 0
        {
                if (b == 0)
                {
                        std::cout <<"Resultat: infinite de solutions" << std::endl;
                }
                else
                {
                        std::cout <<"Resultat: aucune solution" << std::endl;
                }                        
        }
}