#ifndef Vector_#define Vector_#include <iostream.h>#include "xcept.h"template<class T>class Vector {public:   Vector(int size = 0);   Vector(const Vector<T>& v); //copy constructor   ~Vector() {delete [] element;}   T& operator[](int x) const;   int Size() {return size;}   Vector<T>& operator=(const Vector<T>& v);   Vector<T> operator+() const; //unary +   Vector<T> operator+(const Vector<T>& v) const;   Vector<T> operator-() const; //unary minus   Vector<T> operator-(const Vector<T>& v) const;   Vector<T> operator*(const Vector<T>& v) const;   Vector<T>& operator+=(const T& x);   void Output(ostream& out) const;private:    int size;    T *element; //array};  template<class T>Vector<T>::Vector(int sz){//createif (sz < 0) throw BadInitializers();size = sz;element = new T[sz];}template<class T>Vector<T>::Vector(const Vector<T>& v){//copy constructorsize = v.size;element = new T[size];for (int i = 0; i < size; i++)   element[i] = v.element[i];}template<class T>Vector<T>& Vector<T>::operator=(const Vector<T>& v){//overload assignment operatorif (this != &v) {//not self assignment   delete [] element;   size = v.size;   element = new T[size];   for (int i = 0; i < size; i++)      element[i] = v.element[i];   }return *this;}template<class T>T& Vector<T>::operator[](int x) const{//return reference to element xif (x < 1 || x > size) throw OutOfBounds();return element[x - 1];}template<class T>Vector<T> Vector<T>::operator+(const Vector<T>& v) const{if (size != v.size) throw SizeMismatch();Vector<T> w(size);for (int i = 0; i < size; i++)    w.element[i] = element[i] + v.element[i];return w;}template<class T>Vector<T> Vector<T>::operator-(const Vector<T>& v) const{if (size != v.size) throw SizeMismatch();Vector<T> w(size);for (int i = 0; i < size; i++)    w.element[i] = element[i] - v.element[i];return w;}template<class T>Vector<T> Vector<T>::operator-() const{//unary minusVector<T> w(size);for (int i = 0; i < size; i++)    w.element[i] = -element[i];return w;}template<class T>Vector<T> Vector<T>::operator*(const Vector<T>& v) const{if (size != v.size) throw SizeMismatch();Vector<T> w(size);for (int i = 0; i < size; i++)    w.element[i] = element[i] * v.element[i];return w;}template<class T>Vector<T>& Vector<T>::operator+=(const T& x){for (int i = 0; i < size; i++)    element[i] += x;return *this;}template<class T>void Vector<T>::Output(ostream& out) const{// put the vector into the stream outfor (int i = 0; i < size; i++)   out << element[i] << "  ";}//overload <<template <class T>ostream& operator<<(ostream& out, const Vector<T>& x){x.Output(out); return out;}#endif