tut12-zad6

#include <iostream>
#include <iomanip>
#include <stdexcept>
#include <functional>
#include <algorithm>


using namespace std;

class Jed {
    int inc;

public:
    Jed (int jard, int stopa, int inc ) { Jed::inc=inc+stopa*12+jard*3*12; }

    Jed (double metri) { inc=int (metri*100/2.54); }

     void Daj (int &jardi, int &stope, int &inc);

     double DajMetre () const { return inc*2.54/100; }
     friend Jed &operator+(Jed a, Jed b) {
         Jed c(0);
         c.inc=a.inc+b.inc;
         return c;
     }
     friend Jed &operator+=(Jed &a, const Jed &b) {
         return a=a+b;
     }
     friend Jed &operator++(Jed &a) {
        a.inc++;
        return a;
     }
     friend Jed operator++(Jed &a, int) {
         Jed pom(a);
         a.inc++;
         return pom;
     }
     friend Jed operator *(Jed a, double x) {
         return (0,0,int(a.inc*x));
     }
     friend Jed operator* (double x, Jed a) {
         return (0,0,int(x*a.inc));
     }
     friend double operator/ (Jed a, Jed b) {
         return a.inc/b.inc;
     }
     friend ostream &operator <<(ostream &tok, const Jed &a) {
         tok<<a.inc%36<<" yd "<<(a.inc%36)/12<<" ft "<<a.inc<<" in ";
         return tok;
     }
     };

  void Jed::Daj (int &jardi, int &stope, int &inc) {
         jardi=Jed::inc%36;
         stope=(Jed::inc%36)/12;
         inc=(Jed::inc%36)%12;
         if (inc<0) throw "Neispravan parametar!";
         if (inc>11) {
                inc=0;
         stope+=1;
         }
         if (stope<0) throw "Neispravan parametar!";
         if (stope>2) {
                stope=0; jardi+=1;
         }
     }

     int main () {
         Jed a(3,4,2),b(12);
         cout<<a<<endl;
         cout<<b<<endl;
         Jed c(a+b);
         cout<<"Zbir :"<<c<<endl;
         cout<<"Metri: "<<a.DajMetre();
         return 0;
     }