#include "wielomian.h"
#include <iostream>
#include <iomanip>
#include <ostream>
using namespace std;

Wielomian::Wielomian()
{
//	cout << "Konstruktor domyslny" << endl;
	wsp = new double[1];
	st = 0;
	wsp[0]=0;
}

Wielomian::Wielomian(int st, double *wsp)
{
//	cout << "Konstruktor" << endl;
	this->wsp = new double[st+1];
	this->st = st;
	double *p=this->wsp + st;

	while(st-- >= 0 ) *p-- = *wsp++;

}

Wielomian::Wielomian(Wielomian &w)
{
//	cout << "Konstruktor kopiujacy" << endl;
	wsp = new double[w.st+1];
	st = w.st;
	double *p1=this->wsp+st;
	double *p2=w.wsp + st;

	while(p1 >= wsp) *p1--=*p2--;
		
}

Wielomian &Wielomian::RazyStala(double stala)
{
	for(double *p=wsp+st; p >= wsp; p--) *p*=stala;
	return *this;
}

Wielomian& Wielomian::Wpisz()
{
	cout << "Stopien = ";
	cin >> st;
	
	delete [] wsp;
	wsp =  new double[st+1];
	for(int i=st; i> 0 ; i--)
	{
		cout << "x^" << i << " * ";
		cin >> wsp[i];
	}
	cout << "+ ";
	cin >> wsp[0];

	return *this;
}


void Wielomian::Wypisz()
{
	
	for(int i=st; i >0;i--)
	{
		if(wsp[i]!=0)
		{
			cout  << " " << showpos << setprecision(2) << wsp[i] << " * x^" << noshowpos  << i; 
		}
	}
	cout << showpos << setprecision(2)<< *wsp << endl;
}


Wielomian::~Wielomian()
{
//	cout << "Destruktor" << endl;
	delete [] wsp;
}