题解 | #设计立方体类#

类的设计很简单，而且函数只是获取类中某一成员或表面积体积，我这种是把定义和实现分开写（一大堆函数啊。。。）

#include <iostream>
using namespace std;

class Cube {
  public:
    void setLength(int l);
    void setWidth(int w);
    void setHeight(int h);
    int getLength();
    int getWidth();
    int getHeight();
    int getArea();
    int getVolume();
  private:
    int length;
    int width;
    int height;
};
void Cube::setLength(int l) {
    length = l;
}
void Cube::setWidth(int w) {
    width = w;
}
void Cube::setHeight(int h) {
    height = h;
}
int Cube::getLength() {
    return length;
}
int Cube::getWidth() {
    return width;
}
int Cube::getHeight() {
    return height;
}
int Cube::getArea() {
    return (length * width + length * height + width * height) * 2;
}
int Cube::getVolume() {
    return length * width * height;
}
int main() {

    int length, width, height;
    cin >> length;
    cin >> width;
    cin >> height;

    Cube c;
    c.setLength(length);
    c.setWidth(width);
    c.setHeight(height);

    cout << c.getLength() << " "
         << c.getWidth() << " "
         << c.getHeight() << " "
         << c.getArea() << " "
         << c.getVolume() << endl;

    return 0;
}