// program to output the difference between two input times
#include <iostream>
#include <exception>

int main()
{
int count(0);
int firsttotal(0);
int secondtotal(0);

try{
    do{
     int hours(0);
     int min(0);
     int sec(0);

     int total(0);

     std::cout << "Please input hours, minutes, seconds:" << '\n';
     std::cin >> hours >> min >> sec;
     if(not std::cin) throw std::exception();

     if(hours >= 1) total += hours * 3600;
     if(min >= 1) total += min * 60;
     if(sec >= 1) total += sec;

     ++count;
     if(count == 1) firsttotal = total;
     if(count > 1) secondtotal = total;

}while(count < 2);

int biggest(0);
int smallest(0);

if(firsttotal > secondtotal)
{
    biggest = firsttotal;
    smallest = secondtotal;
}
else
{
biggest = secondtotal;
smallest = firsttotal;
}

int seconds(0);
seconds = biggest-smallest;

int hours(0);
int mins(0);

hours = seconds / 3600;
int h_sec(0);
h_sec = hours * 3600;
seconds-= h_sec;

mins = seconds / 60;
int m_sec(0);
m_sec = mins * 60;
seconds-= m_sec;

std::cout << "The time difference is " << hours << " hours, " << mins << " minutes, " << seconds << " seconds.\n";

}
catch(...)
{
    std::cerr << "***An exception was thrown***\n";
}

}