oop_numere_complexe

Complex::Complex() ///  constructor creeaza numarul complex nul
{
    r=0;
    i=0;
}

Complex::Complex(int pr,int pi) /// constructor stabileste valoare partii reale si a celei imaginare
{
    r=pr;
    i=pi;
}

void Complex::set(int pr,int pi) /// seteaza valorile partii reale si a celei imaginare
{
    r=pr;
    i=pi;
}

double Complex::modul()
{
    return sqrt(r*r+i*i);
}

int Complex::real() /// returneaza partea reala
{
    return r;
}

int Complex::imag() /// returneaza partea imaginara
{
    return i;
}

ostream& operator<<(ostream& out, const Complex& c) /// supraincarcare operator pentru afisarea numarului complex
{
    if(c.r!=0||c.i==0)
        out <<c.r;
    if(c.i>0&&c.r!=0)
        out<<"+";
    if(c.i!=0)
        out<<c.i<<"i";
    return out;
}

Complex Complex::operator +(Complex b) /// supraincarcare operator adunare
{
    Complex c;
    c.set(this->r+b.real(),this->i+b.imag());
    return c;
}

Complex Complex::operator -(Complex b) /// supraincarcare operator scadere
{
    Complex c;
    c.set(this->r-b.real(),this->i-b.imag());
    return c;
}

Complex Complex::operator *(Complex b) /// supraincarcare operator inmultire
{
    Complex c;
    c.set(this->r*b.real()-this->i*b.imag(),this->i*b.real()+this->r*b.imag());
    return c;
}