string convertSecToHoMinSec(int sec) {
int ho = sec / 3600;
int rem1 = sec % 3600;
int min = rem1 / 60;
int rem = rem1 % 60;
string s = ho.ToString("00") + " Hours, " + min.ToString("00") + " Minutes, and " + rem.ToString("00") + " Seconds";
return s;
}