#ifndef COMPLEX_H
#include <iostream>
#include <ostream>
// represents complex numbers in cartesian form
struct Complex {
double re;
double im;// todo
};
// complex number output
std::ostream& operator<< (std::ostream& cout, Complex c);
std::istream& operator>> (std::istream& cin, Complex c);
Complex operator+ (Complex& a, Complex& b);
Complex operator- (Complex& a, Complex& b);
Complex operator-(Complex a);
Complex operator* (Complex& a, Complex& b);
Complex operator/ (Complex& a, Complex& b);
bool operator== (Complex& a, Complex& b);
bool operator!= (Complex& a, Complex& b);
#endif
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