题解 | #牛牛学矩形#

面向对象思想

#include <iostream>
using namespace std;

class Rectangle {
    public:
        Rectangle(int width, int height): _width(width), _height(height){}
    
        // 求周长
        int perimeter() {
            return (_width + _height) * 2;
        }
    
        // 求面积
        int area() {
            return _width * _height;
        }
    
    private:
        int _width;
        int _height;
};

int main() {
    int width = 0, height = 0;
    cin >> width >> height;
    Rectangle rectangle(width, height);
    cout << rectangle.perimeter() << endl;
    cout << rectangle.area() << endl;
}