Challenge 2: Vector2D With operator== — Possible Solution
====================================================================

#include <iostream>

class Vector2D {
public:
    double x, y;

    Vector2D operator+(const Vector2D &other) {
        return Vector2D{x + other.x, y + other.y};
    }

    bool operator==(const Vector2D &other) {
        return x == other.x && y == other.y;
    }
};

int main() {
    Vector2D a{1, 2};
    Vector2D b{1, 2};
    Vector2D c{5, 5};

    std::cout << (a == b) << std::endl;  // identical components
    std::cout << (a == c) << std::endl;  // different components

    return 0;
}

Output:

    1
    0

(std::cout prints a bool as 1 for true and 0 for false by default.)

WHY THIS WORKS AS AN ANSWER
------------------------------
a == b compares two vectors with identical x and y values, so
operator== correctly returns true (printed as 1); a == c compares
vectors with different components, correctly returning false (printed
as 0) -- confirming the overload genuinely performs a member-by-member
comparison and returns a real bool, per cpp1-2's own primitive.