#include <iostream>

class Box {
private:
    int height, width, depth;    // private data members.
public:
    Box(int, int, int); // constructor function.
    ~Box();             // destructor function.
    int volume();       // member function (compute volume).
};


// The constructor function.
Box::Box(int ht, int wd, int dp)
{
    height = ht;
    width = wd;
    depth = dp;
}


// The destructor function.
Box::~Box()
{
    // does nothing
}


// Member function to compute the Box's volume.
int Box::volume()
{
    return height * width * depth;
}




int main()
{
    // Construct a Box object.
    Box thisbox(7, 8, 9);

    // Compute and display the object's volume.
    int volume = thisbox.volume();
    std::cout << volume;
    return 0;
}