Ax + B = 0 - OOP
using namespace std;
class Bac1{
private:
float a, b;
public:
Bac1(){
a =b = 0;
}
Bac1(float x, float y){
a = x; b = y;
}
void nhap(){
cout<<"Nhap a :"; cin>>a;
cout<<"Nhap b :"; cin>>b;
}
void giai(){
if(a==0)
if(b==0)
cout<<"vo so nghiem ";
else
cout<<" vo nghiem";
else cout<<" x = "<<-b/a;
}
};
int main(){
Bac1 a;
a.nhap();
a.giai();
}