#ifndef h8_h_#define h8_h_#include<iostream>#include<cmath>using namespace std;class Vector{private:	double x;	double y;	double direction;	double length;public:	Vector(double x_ = 0,double y_ = 0);	Vector(const Vector& temp);	~Vector();	void set_length();	void set_dirextion();	Vector operator+(const Vector& temp)const;	Vector operator-(const Vector& temp)const;	Vector operator*(const Vector& temp)const;	Vector& operator=(const Vector& temp);	Vector& operator--();	Vector& operator++();	Vector operator++(int);	Vector operator--(int);	friend double operator*(double i,Vector& temp);	friend ostream& operator<<(ostream& out,Vector& temp); };#endif