how to calculate the date of current date-1 month?

saubhik · New User Joined: 21 Sep 2007 Posts: 35 Location: kolkata

can anyone tell me how to calculate the date of 1 months back in cobol from current date.
example:
suppose i have a field current-date in my input file.i have to change this date to 1 month previous date and write that date into a file.how can i do that?

thanks,
saubhik

CICS Guy · Posted: Fri Mar 20, 2009 12:21 am

A quick COBOL forum search of "current date minus month" resulted in Date that will be 6 months less than the current date.....

saubhik · New User Joined: 21 Sep 2007 Posts: 35 Location: kolkata

thnks..but if i want do it in a simpler way...using cobol DATE routine
or inbuild functions..please suggest..

Craq Giegerich · Posted: Fri Mar 20, 2009 12:34 am

Just remember that some months are 30 days, 31 days, 28 days, or 29 days. That makes it rough when you have to use days for the calculations. Check and see if your site has a standard date calculation routine. I developed one in assembler to be called from cobol many years ago, it sure saved a lot of trouble. I received a lot of late night calls from idiots that passed bad data then got bad results and tried to blame me.

CICS Guy · Posted: Fri Mar 20, 2009 12:40 am

In The Month difference bw the start date and end date