class example of C++

#include <iostream>

using namespace std;

class Rectangle {

    int width, height;

  public:

    void set_values (int,int);

    int area() {return width*height;}

};

void Rectangle::set_values (int x, int y) {

  width = x;

  height = y;

}

int main () {

  Rectangle rect;

  rect.set_values (3,4);

  cout << "area: " << rect.area();

  return 0;

}