#include <iostream>
#include <math.h>
using namespace std;
class Adaptee{ //Existing way requests are implemented provide full precision
  public:
	double SpecificRequest(double a, double b){
    	return a / b;
    }
};

class Adapter{//Required standard for requests. Rough estimate required
  public:
	virtual double Request(int i)=0;
};

class ConcreteAdapter:public Adapter{
//Implementing the required standard via the Adaptee
	Adaptee *adaptee;
  public:
	ConcreteAdapter(Adaptee *adaptee):adaptee(adaptee){}
	double Request(int i){
		double val=adaptee->SpecificRequest(i, 3);
		//double val = 37.777779;
		double rounded_down = floorf(val * 100) / 100;   /* Result: 37.77 */
		double nearest = roundf(val * 100) / 100;  /* Result: 37.78 */
		double rounded_up = ceilf(val * 100) / 100;      /* Result: 37.78 */		
      	return nearest;
    }
};
int main(){//The Client Code
    // Showing the Adapteee in stand-alone mode
    Adaptee adaptee;
    cout<<"Before the new standard\nPrecise reading: "<<endl;
    cout<<adaptee.SpecificRequest(5, 3)<<endl;

    // What the client really wants
    Adapter* padapter = new ConcreteAdapter(&adaptee);
    cout<<"\nMoving to the new standard"<<endl;
    cout<<padapter->Request(5)<<endl;
    delete padapter;
    return 0;
}