//---------------------------------------------------------------------------

#include <iostream>
#include <cmath>

int i = 0;

using namespace std;


struct wynik
{
    double x,y;
};


double jaka_wartosc(double x)
{
 return (x*x*x)*(x + sin((x*x) -1) -1) -1;
}

//---------------------------------------------------------------------------
// f(x)= x3(x + sin(x2 - 1) - 1) - 1
wynik znajdz_x_zero(double min, double max)
{
double wart, w_max, w_min;

wynik tmp;
i++;
cout << i << endl;

double sr = (max + min) / 2;
cout << sr << endl;
wart = jaka_wartosc(sr);
if (abs(wart) <= 0.00000000001)
{
  tmp.x = sr;
  tmp.y = wart;
 return tmp;
}
 w_max = jaka_wartosc(max);
 w_min = jaka_wartosc(min);


 if (w_min*wart<0)
   {max=sr;}

 else
   {min=sr;}

  znajdz_x_zero(min,max);
}


int main(int argc, char* argv[])
{
char a;
wynik w;
w = znajdz_x_zero(1,5);
cout << "f( "<< w.x <<" ) = " << w.y << endl;
system("PAUSE");
        return 0;
}
//---------------------------------------------------------------------------