Re: READING 2 RECS before write to PRINT REC

jeff@[EMAIL PROTECTED]
 wrote:

> I have a program that I wrote that creates a work file to read from to
> create a print record. The program is a sales re****t that allows the
> user to specify how many years to compare. An example is 07-01-06 thru
> 07-31-06 If they answer 3 prior years it would show sales data (it also
> handles exact day instead of just 070106, 071005, 070104)
> 20060701
> 20050702
> 20040703
> 
> 20060702
> 20050703
> 20040704
> 
> When I read the Work file I need to read 2 recs before writing the
> print record to calculate the percentage change in amount. Example:
> 20060701               10%
> 20050702                7%
> 20040703
> Sales up 10% for 2006 over 2005, sales up 7% 2005 over 2004.
> 
> Any ideas on the best way to accomplish this?

In psuedo code:
open files
read first record into first work field.
perform loop until end file.
close files. 

loop.
read next record into second work field.
calculate percent change.
move second work field to print-rec-date.
move percent change to print-rec pct.
write print-rec.
move second-work field to first work-field.
------------------------------------------

Now my logic may be faulty since I don't know how the input file
is organized. But the principle is to create a pipeline which
holds two records at a time. After you do the calculation and
print the re****t line you ****ft the data and read another record. 

The other suggestion of laying all the data up in a big table may
also be useful. 

Specify your input record layout and your re****t line layout.
That may help us help you. 

BTW is the input file sequential or indexed-sequential?
-- 
John Culleton
Able Indexers and Typesetters