complex.h

#include <iostream>
#include <math.h>
using namespace std;

class complex
{
    float x, y;
public:
    complex(float x, float y);
    complex(float x) :complex(x, 0){}
    complex() :complex(0, 0){}
    complex(const complex &z) : complex(z.x, z.y) {}
    ~complex();

    float re(){ return this->x; }
    void setX(float x){ this->x = x; }
    float im(){ return this->y; }
    void setY(float y){ this->y = y; }

    float abs();
    complex* conjugate();

    complex* operator+(const complex&);
    complex* operator-(const complex&);
    complex* operator*(const complex&);
    complex* operator/(const complex&);
    complex* operator+(float);
    complex* operator-(float);
    complex* operator*(float);
    complex* operator/(float);

    complex* operator+=(const complex&);
    complex* operator-=(const complex&);
    complex* operator*=(const complex&);
    complex* operator/=(const complex&);
    complex* operator+=(float);
    complex* operator-=(float);
    complex* operator*=(float);
    complex* operator/=(float);

    complex* operator==(const complex&);
    complex* operator!=(const complex&);

    complex* reciprocal();
    complex* e();
    complex* sinus();
    complex* cosinus();
    complex* tangent();

    friend ostream& operator<<(ostream&, const complex&);
    friend istream& operator>>(istream&, complex&);
};