#includeIn this example, we have created a class called Vector2f which stores the x and y coordinates of the vectors. The Dot() function calculates the dot product of the two vectors. We have then created two instances of the Vector2f class, 'a' and 'b' with some arbitrary values. Finally, we use the Dot() function to find the dot product of the two vectors, and output the result to the console. We can determine that the package library used in this example is not specified, as it only includes standard headers like iostream, vector and cmath, and does not explicitly use any external libraries to handle vectors.#include #include using namespace std; class Vector2f { public: Vector2f(float x, float y) : x_(x), y_(y) {} float Dot(const Vector2f& other) const { return x_ * other.x_ + y_ * other.y_; } private: float x_; float y_; }; int main() { Vector2f a(2, 1); Vector2f b(1, 2); float dot_product = a.Dot(b); cout << "Dot product of vectors a and b: " << dot_product << endl; return 0; }