#include <iostream>
using namespace std;

class Rectangle {
  private:
    int width, height;
  public:
    void setWidth(int w);
    void setHeight(int h);
    int getWidth() const;
    int getHeight() const;
};

void Rectangle::setWidth(int w) { width = w; }
void Rectangle::setHeight(int h) { height = h; }
int Rectangle::getWidth() const { return width; }
int Rectangle::getHeight() const { return height; }

int main () {
  Rectangle rect;
  rect.setWidth(5);
  rect.setHeight(6);
  cout << "area: " << rect.getWidth() * rect.getHeight() << endl;
  return 0;
}