#include<iostream.h>
#include<math.h>

class Complex{
  private:
    double real_part, im_part;
  public: 
    void get_complex_data();
    void print_complex();
    Complex sum(Complex);
  // Complex product(Complex);
  // double absolute_value();
};

void Complex :: get_complex_data(){
  cout << "Enter x and y for a complex number x + iy: ";
  cin >> real_part >> im_part;
}

void Complex :: print_complex(){
  cout << real_part << " + " << im_part << "i";
}

Complex Complex :: sum (Complex z){

  Complex s;

  s.real_part = real_part + z.real_part;
  s.im_part = im_part + z.im_part;
  
  return s;
} 

void main(){
  Complex z1,z2,z3;

  z1.get_complex_data();
  z2.get_complex_data();

  z3 = z1.sum(z2);

  cout << "The sum of ";
  z1.print_complex();
  cout << " and ";
  z2.print_complex();
  cout << " is ";
  z3.print_complex();
  cout << ".\n";

}