Why can not my function return like this?

Question

Vector add(Vector &v2)
{
return Vector(this->getX() + v2.getX(), this->getY() + v2.getY());
}

It compiles only when I declare a Vector v3 first, and then return v3.
( ctor: Vector(double,double) )

Answer 1

you need to use out parameter to return two values from the same function

Answer 2

you can't return multiple values from a single function!

Answer 3

I tried to return an Object, not two parameters.
1 Vector object is the return value, which gets two parameters when initialized like
return Vector(1.0,1.0)
But it also makes an error