кОмплЕксные числа

#include <iostream>
#include <cmath>

using namespace std;

class Complex
{

private:
    double re, im;

public:
    Complex()
    {
    };
    Complex(double r, double i)
    {
        re = r;
        im = i;
    }
    Complex operator + (const Complex &c)
    {
        return Complex(re + c.re, im + c.im);
    }
    Complex operator - (const Complex &c)
    {
        return Complex(re - c.re, im - c.im);
    }
    Complex operator * (const Complex &c)
    {
        return Complex(re * c.re - im * c.im, re * c.im + im * c.re);
    }
    void print()
    {
        cout << "Deistvitelnoe " << re << "\tMnimoe " << im<< endl;
    }
};

int main()
{
    Complex a(1,1);
    Complex b(1,2);
    Complex c(0,1);
    cout << "a =  ";
    a.print();
    cout << "b =  ";
    b.print();
    cout << "c =  ";
    c.print();

    Complex sum = ((a*a) - (b*b*b) - (c));

    cout << "Answer is: ";

    sum.print();

    system("pause");

}