#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, rectb;
  cout<<"rect.area: "<<rect.area()<<endl;
  rect.set_values (3,4);
  rectb.set_values (5,6);
  cout << "rect area: " << rect.area() << endl;
  cout << "rectb area: " << rectb.area() << endl;
  return 0;
}
 
 
 
 
 
 
 
 
 
 

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