Vec2d   Vec2d::operator-(Vec2d B){

    Vec2d C;

C.x = x - B.x;

C.y = y - B.y;

return C;

}

Vec2d   Vec2d::operator/(float num ){

Vec2d C;

C.x = x / num;

C.y = y / num;

return C;

}

float Vec2d::vectorLength(){// implicet pass of THIS for  x y/// Vec2d B is start point

 float num = sqrt ((pow (x,2))+(pow (y,2)));   

 return num;

}