/****************************************************************
example 6 -- length.h
    feet/inches manager
****************************************************************/
#include <iostream>
using namespace std;

//class definition
class length {
    private:
        int inches;
    public:
        length(const int& f = 0, const int& i = 0);
        void show(ostream& out = cout) const {
            out << inches / 12 << '\'' << inches % 12 << '"';
        }
        void grow(const float& = 1.0);

        void operator++(int){ //postfix increment
            inches += 12;
        }

        friend ostream& operator<<(ostream&, const length&);
};