C/code/坐标点Point的运算符重载.cpp

#include <iostream>

class Point {
private:
    int _x;
    int _y;

public:
    Point(int x, int y) : _x(x), _y(y) {}

    Point& operator++() {
        _x++;
        _y++;
        return *this;
    }

    Point operator++(int) {
        Point temp = *this;
        _x++;
        _y++;
        return temp;
    }

    Point& operator--() {
        _x--;
        _y--;
        return *this;
    }

    Point operator--(int) {
        Point temp = *this;
        _x--;
        _y--;
        return temp;
    }

    void display() {
        std::cout << "(" << _x << ", " << _y << ")";
    }
};

int main() {
    int x, y;
    std::cin >> x >> y;

    Point point(x, y);

	Point temp0 = point;
    temp0.display();
    std::cout << std::endl;
    
    // 后置和前置“++”运算
  	Point temp1 = point++;
    temp1.display();
    std::cout << std::endl;
    

    ++point;
    point.display();
    std::cout << std::endl;

    // 后置和前置“--”运算
    Point temp2 = point--;
    temp2.display();
    std::cout << std::endl;

    --point;
    point.display();
    std::cout << std::endl;

    return 0;
}