class Point private. int_xy public: Point & operator- - ();Point operator- -int); Please finish the definition of the operator overloading Point& Point:;operator--0 Point Point::opcrator- -(int)

Here is the completed definition of the operator overloading functions:

class Point {
private:
    int _x;
    int _y;
public:
    Point(int x = 0, int y = 0) : _x(x), _y(y) {}
    
    // Prefix decrement operator overloading
    Point& operator--() {
        _x--;
        _y--;
        return *this;
    }
    
    // Postfix decrement operator overloading
    Point operator--(int) {
        Point temp = *this;
        _x--;
        _y--;
        return temp;
    }
    
    // Friend function to output Point objects
    friend std::ostream& operator<<(std::ostream& os, const Point& p) {
        os << "(" << p._x << ", " << p._y << ")";
        return os;
    }
};

int main() {
    Point p(5, 7);
    std::cout << "p = " << p << std::endl;
    
    // Prefix decrement
    --p;
    std::cout << "--p = " << p << std::endl;
    
    // Postfix decrement
    Point q = p--;
    std::cout << "q = " << q << std::endl;
    std::cout << "p = " << p << std::endl;
    
    return 0;
}

In this example, we overload both the prefix decrement operator (`--`) and the postfix decrement operator (`--int`). The prefix decrement operator returns a reference to the Point object after decrementing its `_x` and `_y` members. The postfix decrement operator returns a copy of the original Point object before decrementing its members.

We also define a friend function `operator<<` to output Point objects in a nice format. Using these operator overloading functions, we can easily manipulate Point objects using the decrement operators.