1. page 55 exercise 3. - face image recognition
2. page 67 exercise 3. - hotel occupation

#include <iomanip>

using namespace std;

 

int main()

{

    double eyeDistance1, eyeDistance2, eyeDistance3;

    double noseToChinDistance1, noseToChinDistance2, noseToChinDistance3;

    double ratio1, ratio2, ratio3;

 

    cout<<"Enter values in cm."<<endl;

 

    cout<<Enter eye distance and nose to chin distance for image 1 :"<<endl;

    cin>>eyeDistance1;

    cin>>noseToChinDistance1;

    ratio1 = eyeDistance1 / noseToChinDistance1;

 

    cout<<Enter eye distance and nose to chin distance for image 2 :"<<endl;

    cin>>eyeDistance2;

    cin>>noseToChinDistance2;

    ratio2 = eyeDistance2 / noseToChinDistance2;

 

    cout<<Enter eye distance and nose to chin distance for image 3 :"<<endl;

    cin>>eyeDistance3;

    cin>>noseToChinDistance3;

    ratio3 = eyeDistance3 / noseToChinDistance3;

 

    cout<<setprecision(2);

        if (ratio1 >= ratio2)

        {

            cout<<"Best matches is between image 1 and image 2."<<endl;

        }

 

        else if (ratio1 >= ratio3)

        {

            cout<<"Best matches is between image 1 and image 3."<<endl;

        }

 

        else if (ratio2 >= ratio3)

        {

            cout<<"Best matches is between image 2 and image 3."<<endl;

        }

 

        else

            cout<<"None of them are matches."<<endl;

 

    return 0;

}