#include <iostream>
using std::cout;
using std::cin;
using std::endl;
#include <cmath>

#include <string>
using std::string;

#include <fstream>
using std::ofstream;

#include "Derivative.h"
#include "myFunction.h"


int main()
{
  cout << "Derivative example" << endl;
  double x ;
  double h ;
  cout << "x: ";
  cin >> x ;
  cout<< "Toleracence: ";
  cin >> h ;
  cout << "Derivative of cube function in x = "<<x;
  double a = derivative(cube, x, h);
  cout<<" is : "<<a<<endl;
  
  string nameout = "derivative.txt";
  ofstream outfile(nameout);
  //
  //  outfile<<"Derivative"<<x<<endl;//" with a tolererance of "<<h<<" is "<<a<<endl;

  outfile<<"the derivative of cube in "<<x<<" is "<< a <<endl;

  cout<<"File "<<nameout<<"has been created"<<endl;
  
  return 0;
  
}