// NTmach.h
// specification for Number Theory Machine

#include <iostream>
using namespace std;

class NTmach{
 public:
   // constructor
   //NTmach(); -- use the compiler-generated ctor
    
    //get-er
    //inline definition
    long get_n(){ return n; }

    //set-er
    //defined in .cpp file
    void set_n(long num);

    //number theory functions

    int numDigits();
    int sumOfDivisors();
    bool isPerfect();
    bool isDeficient(){ return sumOfDivisors() < n; }
    int reverse_n();

 private:
    long n;   //data member that functions operate on

    //optional members, not required for P5
    //arrays where you can store interesting numbers
    //add more, as necessary

    long primes[100];
    long fibn[100];
};