The complex class

// File name : complex.h

#ifndef _COMPLEX_H_
#define _COMPLEX_H_
#include <iostream>
using namespace std;

class  complex {
public:
	complex(double x = 0, double y = 0) {
		real = x;
		imag = y;
	}
	complex(complex &src) {
		real = src.real;
		imag = src.imag;
	}
	~complex() {}

	complex operator+(const complex& src) const{
		return complex(real + src.real, imag + src.imag);
	}
	complex& operator=(const complex& src) {
		real = src.real;
		imag = src.imag;
		return (*this);
	}
	void operator++(int) {
		cout << "call post++"<<endl;
		imag = imag + 1;
	}
	void operator++() {
		cout << "call pre++"<<endl;
		real = real + 1;
	}
	void print(ostream& out) {
		if(real != 0) out<<real;
		if(imag > 0)  out<<"+"<<imag<<"j";
		else if(imag < 0)  out<<imag<<"j";
		if(real == 0 && imag == 0)  out<<"0";
	}

private:
	double real;
	double imag; 

};

ostream& operator<<(ostream& out, complex& obj) {
	obj.print(out);
	return out;
}

#endif