In the original handout, the epoch time 917942400 was said to be Jan
2, 1999.  In fact, that epoch time is Feb 2, 1999 (struct tm variable
tm_mon starts at 0, not 1).

For the 4th question, please include the following scenarios in your
turnin scriptfile:

Was there an upward trend from 1/12/1999 to 10/12/1999 in the "Open" values?
Was there an upward trend from 23/8/1999 to 26/8/1999 in the "High" values?
Was there an upward trend from 12/12/2000 to 1/1/2001 in the "Close" values?