Sum of two Times

/*     Sum of two times       */
/*       Language: C++        */



#include <iostream.h>
#include <conio.h>

class time_class
{
    int hour,minute,seconds;

    public:
        time_class()
        {
            seconds=minute=hour=0;
        }

        time_class(int thour,int tminute,int tseconds)
        {
           hour = thour;
           minute=tminute;
           seconds=tseconds;
        }

        time_class operator + (time_class &time1)
        {
            time_class result;
            result.seconds=seconds+time1.seconds;
            if(result.seconds>60)
            {
                result.minute++;
                result.seconds-=60;
            }
            result.minute=result.minute+minute+time1.minute;
             if(result.minute>60)
            {
                result.hour++;
                result.minute-=60;
            }
            result.hour=result.hour+hour+time1.hour;
            if(result.hour>24)
                result.hour-=24;

            return result;

        }

        friend ostream & operator <<(ostream &temp,time_class &time);

};

ostream & operator <<(ostream &temp,time_class &time)
{
    temp<<"  "<<time.hour<<":"<<time.minute<<":"<<time.seconds;
    return temp;
}


int main()
{
    system("cls");

    int hour,second,minute;

    cout<<"\nEnter Time 1 (Hours / Minutes / Seconds) : \n";
    cin>>hour>>minute>>second;
    time_class time1(hour,minute,second);

    cout<<"\nEnter Time 2 (Hours / Minutes / Seconds) : \n";
    cin>>hour>>minute>>second;
    time_class time2(hour,minute,second);

    time_class sum;
    sum=time1+time2;
    cout<<"\n\nSum of the Given two times is: "<<sum;
    getch();
    return 0;
}