#include <iostream>

using namespace std;

class complex
{
private:
    double re, im;
public:
    complex() { re = 0; im = 0; }
    complex(double r, double i) { re = r; im = i; }
    complex(const complex &ob) { re = ob.re; im = ob.im; };
    complex& operator = (complex);
    complex operator + (complex);
    complex operator - (complex);
    complex operator * (complex&);
    complex operator [] (int);
    complex operator () (char);
    friend istream& operator >>(istream&, complex&);
    friend ostream& operator << (ostream&, const complex&);
    bool operator == (complex& com);
    bool operator != (complex& com);
    bool operator > (complex& com);
    bool operator < (complex& com);
};

bool complex::operator > (complex& com)
{
    if (this->re > com.re)
        return 1;
    else if (this->re == com.re && this->im > com.im)
        return 1;
    else
        return 0;
}

bool complex::operator < (complex& com)
{
    if (this->re < com.re)
        return 1;
    else if (this->re == com.re && this->im < com.im)
        return 1;
    else
        return 0;

}

bool complex::operator != (complex& com)
{
    if (this->re != com.re || this->im != com.im)
        return 1;
    else
        return 0;
}

bool complex::operator==(complex& com)
{
    if (this->re == com.re && this->im == com.im)
        return 1;
    else
        return 0;
}



complex complex::operator*(complex &com)
{
    double i, j;
    i = re * com.re - im * com.im;
    j = re * com.im + com.re * im;
    re = i;
    im = j;
    return *this;
}


complex& complex::operator=(complex com)
{
    this->re = com.re;
    this->im = com.im;
    return *this;
}

complex complex::operator+(complex com)
{
    this->re = this->re + com.re;
    this->im = this->im + com.im;
    return *this;
}

complex complex::operator-(complex com)
{
    this->re = this->re - com.re;
    this->im = this->im - com.im;
    return *this;
}


ostream& operator << (ostream& out, const complex& com)
{
    if (com.im < 0)
        out << com.re << "+i(" << com.im << ")\n";
    else
        out << com.re << "+i" << com.im << "\n";
    return out;
}

istream& operator >> (istream& in, complex& com)
{
    std::cout << "Введите действительную часть комплексного числа ";
    in >> com.re;
    std::cout << "Введите мнимую часть комплексного числа ";
    in >> com.im;
    return in;
}

float complex::operator[](int i) {
    if (i == 0) {
        return re;
    }
    else if (i == 1) {
        return im;
    }
    else {
        cout << "Оператор []";
        abort();
    }
}
float complex::operator()(char c) {
    if (c == 're') {
        return re;
    }
    else if (c == 'im') {
        return im;
    }
    else {
        cout << "Оператор ()";
        abort();
    }
}

int main()
{
    setlocale(0, "rus");
    complex com;
    cin >> com;
    cout << com << endl;
    system("pause");
    return 0;
}