Pb01. Numere complexe

#include <iostream>

struct Complex
{
    float re, im;
    void citire()
    {
        std::cin >> re >> im;
    }

    void afisare()
    {
        if (im == 0)
            std::cout << re;
        else
            if (im > 0)
                std::cout << re << " + " << fabs(im) << "*i";
            else
                std::cout << re << " - " << fabs(im) << "*i";
    }

    void conjugata()
    {
        im = -im;
    }

    float modul()
    {
        return sqrt(re * re + im * im);
    }

    Complex adunare(Complex C)
    {
        Complex suma = { 0,0 };
        suma.re = re + C.re;
        suma.im = im + C.im;
        return suma;
    }

    Complex scadere(Complex C)
    {
        Complex diferenta = { 0,0 };
        diferenta.re = re - C.re;
        diferenta.im = im - C.im;
        return diferenta;
    }

    Complex inmultire(Complex C)// (a + bi)(c + di) = (ac - bd) + (ad + bc)i
    {
        Complex produs = { 0,0 };
        produs.re = re * C.re - im * C.im;
        produs.im = re * C.im + im * C.re;
        return produs;
    }

    Complex impartire(Complex C)// (a + bi) / (c + di) = (a + bi)(c - di) / [(c + di)(c - di)] = [(ac + bd - (ad - bc)i] / (c*c + d*d)
    {
        Complex cat = { 0,0 };
        cat.re = (re * C.re + im * C.im) / (C.re * C.re + C.im * C.im);
        cat.im = (-re * C.im + im * C.re) / (C.re * C.re + C.im * C.im);
        return cat;
    }
};

int main()
{
    Complex z = { 0,0 }, w = { 0,0 };
    z.citire();
    w.citire();
    Complex cat;
    cat = z.impartire(w);
    cat.afisare();

    return 0;
}