题解 | #求长方体表面积#

#include<bits/stdc++.h>
using namespace std;
class rectangle {
  private:
    int length, width;
  public:
    rectangle(int x, int y) {
        length = x;
        width = y;
    }
    void set(int x, int y) {
        length = x;
        width = y;
    }
    int getlength() {
        return length;
    }
    int getwidth() {
        return width;
    }
    int area() {
        return length * width;
    }
};
class cuboid: public rectangle {
  private:
    int height;
  public:
    // write your code here...
    cuboid(int length, int width, int height) : rectangle(length, width) {
        this->height = height;
    }
    int area() {
        return ((rectangle::area() * 2) + (this->getlength() * this->height * 2) +
                (this->getwidth() * this->height * 2));
    }
};
int main() {
    int x, y, z;
    cin >> x >> y >> z;
    cuboid a(x, y, z);
    cout << a.rectangle::area() << '\n' << a.area();
    return 0;
}