задание 6 (Olya)

#include <iostream>
#include <algorithm>
#include <fstream>
#include <string>
#include <queue>
using namespace std;
ifstream in("input.txt");
ofstream out("output.txt");

class Vector
{
public:
    Vector() {};
    Vector(int x, int y) { this->x = x; this->y = y; }
    void Print()
    {
        out << "(" << x << ", " << y << ")\n";
    }
    void PrintW()
    {
        out << "(" << x << ", " << y << ")";
    }
    double Range()
    {
        return sqrt(sqr(x) + sqr(y));
    }
    static bool Compare(Vector a, Vector b)
    {
        return a.Range() == b.Range();
    }
    Vector operator + (Vector a)
    {
        Vector b = Vector(this->x + a.x, this->y + a.y);
        return b;
    }
    Vector operator - (Vector a)
    {
        Vector b = Vector(this->x - a.x, this->y - a.y);
        return b;
    }

    int operator *(Vector a)
    {
        return x * a.x + y * a.y;
    }
    template<typename T> Vector operator*(T scalar)//умножение на скаляр
    {
        Vector b = Vector(this->x * scalar, this->y * scalar);
        return b;
    }
    Vector operator()(Vector a, Vector b) {//векторное произведение

        Vector с = Vector(a.y - b.y, b.x - a.x);
        return с;

    }
private:
    int x, y;


    long long sqr(int a) { return a * a; }





};

int main()
{
    Vector a(1, 1);
    Vector b(1, 0);
    out << "[ab] = ";
    (a, b).Print();
    out << "a - b = ";
    Vector c = a - b;
    c.Print();
    int k = 5;
    out << "a * k = ";
    a = a * k;
    a.Print();
    a.PrintW();
    if (Vector::Compare(a, b))
        out << " = ";
    else
        out << " <> ";
    b.PrintW();


}