Создать класс Vector 2D

#include <iostream>
#include <cmath>
#include <vector>
using namespace std;
class Vector
{
private:
      int x, y;
public:
      Vector(): x(0), y(0){}
      Vector(int x, int y):x(x),y(y){}
            void ShowData()
            {cout<<"("<<x<<","<<y<<")";cout<<endl;}
double GetDlina()
{
return sqrt(x*x+y*y);}
bool operator == (Vector &v1, Vector &v2)
{
    return (v1.x == v2.x && v1.y == v2.y);
}
 
bool operator!= (Vector &v1, Vector &v2)
{
    return !(v1 == v2);
}
};
int main()
{
    Vector vector(1,1);
    Vector vector1(3,4);
    vector.ShowData();
    vector1.ShowData();
    cout<<vector.GetDlina()<<endl;
    cout<<vector1.GetDlina()<<endl;
    return 0;
}

bool operator == (Vector &v1, Vector &v2)
{
    return (v1.x == v2.x && v1.y == v2.y);
}
 
bool operator!= (Vector &v1, Vector &v2)
{
    return !(v1 == v2);
}
};

bool operator == (const  Vector &v2)
    {
        return (this->x == v2.x && this->y == v2.y);
    }
bool operator!= (const Vector &v2)
    {
        return !(this == &v2);
    }