#include <iostream>

class complexNum {
  private:
    double w, i;

  public:
    complexNum ();
    complexNum (double, double);
    void add (complexNum o) {
    w += o.getWholePart();
    i += o.getImagiPart();
    }
    void subtract (complexNum o) {
    w -= o.getWholePart();
    i -= o.getImagiPart();
    }
    void multiply (complexNum o) {
    double tmp = w;
    w = w*o.getWholePart() - i*o.getImagiPart();
    i = tmp*i + i*o.getWholePart();
    }
    double getWholePart () {return w;}
    double getImagiPart () {return i;}
    void print() {
    std :: cout << "(" << w << " + " << i<<"i)";
    }
};

complexNum::complexNum () {
    w = 16;
    i = 12;
}

complexNum::complexNum (double wPart, double iPart) {
    w = wPart;
    i = iPart;
}

int main() {
    double x1, y1, x2, y2;
    std::cout << "Enter an x1 and y1 value in the form \"x1 y1\"\n";
    std::cin >> x1 >> y1;
    std::cout << "Enter an x2 and y2 value in the form \"x2 y2\"\n";
    std::cin >> x2 >> y2;

    complexNum a = complexNum(x1, y1), b = complexNum(x2, y2);
    a.add(b);
    a.print();

    a = complexNum(x1, y1), b = complexNum(x2, y2);
    a.subtract(b);
    a.print();

    a = complexNum(x1, y1), b = complexNum(x2, y2);
    a.multiply(b);
    a.print();

    system("PAUSE");
    return 0;
}