tut12-zad2

#include <iostream>
#include <iomanip>
#include <stdexcept>
#include <cmath>
#include <vector>


using namespace std;

class Sat {
    int sati, minute, sekunde;
public:
    void Postavi (int sati, int minute, int sekunde);
    int DajSate() const {return sati; }
    int DajMinute() const {return minute;}
    int DajSekunde () const {return sekunde; }

    friend int BrojSekundiIzmedju (const Sat &s1,const Sat &s2);
    friend Sat &operator ++(Sat &s1) {
        s1.sekunde++;
        if (s1.sekunde>59) {
            s1.sekunde=0;
            s1.minute++;
        }
        if (s1.minute<59) {

            s1.minute=0;
            s1.sati++;
        }
        return s1;
    }
    friend Sat operator++(Sat &s1, int) {
        Sat pom(s1);
        s1.sekunde++;
        if (s1.sekunde>59) {
            s1.sekunde=0;
            s1.minute++;
        }
        if (s1.minute<59) {

            s1.minute=0;
            s1.sati++;
        }
        return pom;
    }
    friend Sat &operator --(Sat &s1) {
    s1.sekunde--;
    return s1;
    }
 friend Sat &operator+=( Sat &s, int pomak) {
    s.sekunde+=pomak;
    int temp=s.sekunde+pomak;
    if (temp>59) {
            s.minute+=temp%60;
    s.sekunde=0;
    }
    if (s.minute>59) {
        s.sati+=s.minute%60;
        s.minute=0;
    }
    return s;
}

 friend ostream &operator<<(ostream &tok, const Sat &s) {

    tok<<s.sati<<":";
    tok<<s.minute<<":";
    tok<<s.sekunde;
}


};

void Sat::Postavi (int sati, int minute, int sekunde)
{ if (sati<0 || minute<0 || sekunde<0 || sati>23 || minute>59 || sekunde>59)
throw domain_error ("Neispravan unos.");
    Sat::sati=sati; Sat::minute=minute; Sat::sekunde=sekunde;
}





int BrojSekundiIzmedju (const Sat &s1,const Sat &s2) {
return ((s1.sati*3600+s1.minute*60+s1.sekunde)-(s2.sati*3600+s2.minute*60+s2.sekunde));
}

    int main () {
        Sat s1, s2;
        s1.Postavi(12,45,30);
        cout<<s1<<endl;
        s2.Postavi(14,6,32);
        s2++;
        cout<<s2;
        cout<<endl;
        cout<<s1.DajMinute()<<endl;
        cout<<s2.DajSekunde();
        s1+=13;

        cout<<s1;
cout<<endl;
        int n=BrojSekundiIzmedju(s1,s2);
        cout<<n;
    return 0;
    }