#include <iostream>
using namespace std;

class Cplx
{
    friend ostream& operator<<(ostream &os, Cplx z);
    friend Cplx operator+(Cplx &a, Cplx &b);
    friend Cplx operator-(Cplx &a, Cplx &b);
    friend Cplx operator*(Cplx &a, Cplx &b);
private:
    float re, im;
public:

    Cplx(float x = 0, float y = 0) { re = x; im = y; }
    void   Setri(float x, float y) { re = x; im = y; }
    float  Getr() { return re; }
    void   Seti(float x) { im = x; }
};


Cplx operator+(Cplx &a, Cplx &b)
{
    return Cplx(a.re + b.re, a.im + b.im);
}
Cplx operator-(Cplx &a, Cplx &b)
{
    return Cplx(a.re - b.re, a.im - b.im);
}
Cplx operator*(Cplx &a, Cplx &b)
{
    return Cplx(a.re*b.re - a.im*b.im, a.re*b.im + a.im*b.re);
}
Cplx operator/(Cplx &a, Cplx &b)
{
    return Cplx((a.re*b.re + a.im*b.im)/b.re*b.re+b.im*b.im, (a.im*b.re-a.re*b.im)/b.re*b.re+b.im*b.im);
}
ostream& operator<<(ostream &os, Cplx z)
{
    os << z.re;
    if(z.im >= 0) os << " + ";
    return os << z.im << "i";
}

int main()
{
    Cplx a(5, 6), b(8, 3), c; // deklaracija tri kompleksna broja
    c = a + b;
    cout << c;

    c = a - b;
    cout << c;

    c = a * b;
    cout << c;

    c = a / b;
    cout << c;
    return 0;
}