time_in_sec.cpp

//Program to read time in HH:MM:SS format and convert into total seconds.

#include<iostream>
#include<iomanip>
using namespace std;

class Time
{
    private:
        int seconds;
        int hh,mm,ss;
    public:
        void getTime(void);
        void convertIntoSeconds(void);
        void displayTime(void);
};

void Time::getTime(void)
{
    cout<<"Enter time:\t"<<endl;
    cout<<"Hours :  ";
    cin>>hh;
    cout<<"Minutes : ";
    cin>>mm;
    cout<<"Seconds : ";
    cin>>ss;
}

void Time::convertIntoSeconds(void)
{
    seconds = (hh*3600) + (mm*60) + ss;
}

void Time::displayTime(void)
{
    cout<<"\nThe time you've entered is = "<<setw(2)<<setfill('0')<<hh<< ":"<<setw(2)<<setfill('0')<<mm<< ":"<<setw(2)<<setfill('0')<<ss<<endl;
    cout<<"\nTime in total seconds: "<<seconds;
}

int main()
{
    Time T;

    T.getTime();
    T.convertIntoSeconds();
    T.displayTime();

    return 0;
}