Struk Lab 1 Zad 1

// h
#include "Polinom.h"

void main() {
    Polinom x(3);
    Polinom y(4);
    x.Coef(1, 2.34);
    x.Coef(2, 3.35);
    x.Coef(3, 15.89);
    y.Coef(1, 100);
    y.Coef(0, 52.11);
    y.Coef(4, 67.22);
    x.stampaj();
    y.stampaj();
    Polinom z = saberi(x, y);
    z.stampaj();
}

// main
#pragma once
#include <iostream>
using namespace std;

class Polinom{
    int stepen;
    double *a;
public:
    Polinom();
    Polinom(int s);
    ~Polinom();
    Polinom(const Polinom &p);
    void Coef(int exp, double coef);
    friend Polinom saberi(Polinom &a, Polinom &b);
    void stampaj();
    void operator=(const Polinom &p);
};

// cpp
#include "Polinom.h"

Polinom::Polinom(int s) {
    stepen = s;
    a = new double[stepen + 1]();
}

Polinom::Polinom() {
    stepen = 0;
    a = 0;
}

Polinom::~Polinom() {
    if (a)
        delete[] a;
}

Polinom::Polinom(const Polinom &p) {
    stepen = p.stepen;
    a = new double[stepen + 1]();
    for (int i = 0; i < stepen + 1; i++)
        a[i] = p.a[i];
}

void Polinom::Coef(int exp, double coef) {
    if (exp > stepen || exp < 0) {
        cout << "Eksponent mora biti veci od 0 i manji li jednak " << endl;
        return;
    }
    a[exp] = coef;
}

Polinom saberi(Polinom &a, Polinom &b) {
    int s;
    a.stepen < b.stepen ? s = b.stepen : s = a.stepen;
    Polinom vrati(s);
    for (int i = 0; i < a.stepen + 1; i++) {
        vrati.a[i] = a.a[i];
    }
    for (int i = 0; i < b.stepen + 1; i++) {
        vrati.a[i] = vrati.a[i] + b.a[i];
    }
    return vrati;
}

void Polinom::stampaj() {
    for (int i = stepen; i > 0; i--) {
        if (a[i] != 0)
            cout << showpos << a[i] << "*x^" << noshowpos << i << " ";
    }
    if (a[0] != 0)
        cout << showpos << a[0];
    cout << endl;
}

void Polinom::operator=(const Polinom &p) {
    this->~Polinom();
    stepen = p.stepen;
    a = new double[stepen + 1]();
    for (int i = 0; i < stepen + 1; i++)
        a[i] = p.a[i];
}