Well, that makes sense... very well said.
so Now I just have to figure how to convert 01:33:07 to an
integer add it and convert it back for the footer
At 04:14 PM 4/29/2008, you wrote:
There are two kinds of time, clock time and elapsed time.
Clock time is a twenty four hour clock. In clock time math 23:30 +
60 = 30. Why? Because 23:30 isn't twenty-three hours and thirty
minutes. It's 11:30 PM. And adding 60 minutes (one hour) to 23:30
doesn't get you to 24:30 (which doesn't exist on a clock) it gets
you to half past midnight the next morning.
Elapsed time is different. It's a number of minutes (or seconds or
other unit) and can be added together getting numbers bigger than 24
hours as necessary.
The proper unit for elapsed time is (counter intuitively) not TIME
but rather INTEGER.
If you have two TIME values and want to figure the interval between
them (assuming they're in the same day) you can subtract the smaller
(earlier) from the larger (later). The result will be an INTEGER
number of seconds. You can then use this INTEGER value in addition
operations with other similarly derived INTEGER values to get the
total elapsed time.
--
Larry
Dan Champion
Service Department Manager
Vredevoogd Heating & Cooling
Grandville, MI. 49418
616-534-8271 x 14
