nadav

#include <iostream>
using namespace std;

int main () {

double a,b,c,d,f,imax,imin;
cout<< "y(x) = a + b*x + c*x^2 + d*x^3"<<endl;
cout<< "Select a:"<<endl;
cin>>a;
cout<< "Select b:"<<endl;
cin>>b;
cout<< "Select c:"<<endl;
cin>>c;
cout<< "Select d:"<<endl;
cin>>d;

    if(a<0)
        cout<<"y(x) = ("<<a<<")";     //i check if the nubmer is //
        else cout<<"y(x) = "<<a;

    if(b<0)
        cout<<" + ("<<b<<")*x";
        else cout<<" + "<<b<<"*x";

    if(c<0)
        cout<<" + ("<<c<<")*x^2" ;
        else cout<<" + "<<b<<"*x";

    if(d<0)
        cout<<" + ("<<d<<")*x^3"<<endl;
        else cout<<" + "<<d<<"*x^3"<<endl;
        cout<<endl;

for (int i=10;i>=-10;i--) // it is the Y for the grafh
{
    //     //
imax=i-0.5;
imin=i+0.5;

    for(int j=-35;j<=35;j++) // it is the X for the grafh
    {

        f= a+b*j+c*j*j+d*j*j*j;

         if(f>=imax&&f<=imin)
                cout<<"*";

        else if( (i==0) && (j==0) && (!(f>=imin-0.5&&f<=imax+0.5)) )
            cout<<"+";

        else if(j==0&&!(f>=imin-0.5&&f<=imax+0.5))
            cout<<"|";

        else if(i==0&&!(f>=imin-0.5&&f<=imax+0.5))
                cout<<"-";

        else
            cout<<" ";

    }
  cout<<endl;
}

}