题解 | #求长方体表面积#

#include<bits/stdc++.h>
using namespace std;
class rectangle{
	protected:
		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 x, int y, int z):rectangle(x, y), height(z) {}
		
		int area(){
			return 2*(length*width + length*height + width*height);
		}

};
int main(){
	int x,y,z;
	cin>>x>>y>>z;
	cuboid a(x,y,z);
	cout<<a.rectangle::area()<<'\n'<<a.area();
	return 0;
}