SY_BCS_CPP_Slipno:7_1,17_1,18_2

Slip no: 7_1,17_1,18_2

Write the definition for a class called "time" that has hours, minutes & seconds as integer data members. Consider 24 hr format. The class has the following member functions:

a) void settime(int, int, int) to set the specified values of hours, minutes and seconds in object . [5]

b) void showtime() to display contents of time object. [5]

c) time add(time) add the corresponding values of hours, minutes and seconds (<60) in time object

argument to current time object and make appropriate conversions and return time. [8]

d) time diff(time) subtract values of hours, minutes and seconds in time object argument from current

time object after making appropriate conversions and return time difference. [8]

Write a main program to illustrate the use of above class and member function. [4]

#include<iostream>

using namespace std;

class time1

{

            int hr,min,sec;

            public:

            void settime(int x,int y,int z)

            {           hr=x;

                        min=y;

                        sec=z;

            }

            void showtime()

            {           cout<<"\n"<<hr<<":"<<min<<":"<<sec<<endl;

            }

            time1 add(time1 ob)

            {

                        time1 temp;

                        temp.sec=sec+ob.sec;

                        temp.min=temp.sec/60;

                        temp.sec=temp.sec%60;

                         

                        temp.min=temp.min+min+ob.min;

                        temp.hr=temp.min/60;

                        temp.min=temp.min%60;

                        temp.hr=temp.hr+hr+ob.hr;

                        return temp;

            }

            time1 diff(time1 ob)

            {

                        time1 temp;

                        if(sec<ob.sec)

                        {

                                    temp.sec=sec-ob.sec+60;

                                    min=min-1;

                        }

                        else

                                    temp.sec=sec-ob.sec;

                        if(min<ob.min)

                        {

                                    temp.min=min-ob.min+60;

                                    hr=hr-1;

                        }

                        else

                                    temp.min=min-ob.min;

                        if(hr<ob.hr)

                        {

                                    temp.hr =hr+ob.hr+24;

                        }

                        else

                                    temp.hr=hr-ob.hr;

                        return temp;

            }

             

};

main()

{

            int h,m,s;

            cout<<"\n Enter hr:\t";

            cin>>h;

            cout<<"\n Enter min:\t";

            cin>>m;

            cout<<"\n Enter sec:\t";

            cin>>s;

            time1 t1;        

            t1.settime(h,m,s);

            t1.showtime();

            time1 t2;

            cout<<"\n Enter hr:\t";

            cin>>h;

            cout<<"\n Enter min:\t";

            cin>>m;

            cout<<"\n Enter sec:\t";

            cin>>s;

             

            t2.settime(h,m,s);

            t2.showtime();

             

            time1 t3;

            cout<<"\n Addition of 2 times : ";

            t3=t1.add(t2);

            t3.showtime();

                         

            cout<<"\n Difference between 2 times : "; 

            t3=t1.diff(t2);

            t3.showtime();

}