LOW-VALUES and HIGH-VALUES, PERFORM wih AFTER

ksivapradeep · New User Joined: 30 Jul 2004 Posts: 95

1.I find out in mkroy book that comp-2 is equal to comp-4 and comp-3 is equal to comp-5 thats fine but why we are usinf comp-3 and comp-2 instead of comp-4 and comp-5

2.can any body tell me purpose of LOW-VALUES and HIGH-VALUES.giving an example will be clear

3.suppose we used the sort syntax in the cobol actually which sort it will take internally

4.how many redefine declarations and occurs clause declarations we can be nested

5.PERFORM with AFTER options how many AFTER statements we can nest

badri · New User Joined: 03 Sep 2004 Posts: 9

is comp-4, comp-5 exists?

maximum occurs clauses are 7

no limit for redefines, after

karthi_ind · Posted: Mon Sep 06, 2004 5:10 pm

1) Comp4 and comp5 are two's complement binary, but the diff between these two is comp4 is machine dependant and comp5 is machine independent.

Comp6 is equal to comp3 but it is unsigned, no space allocated for sign.

2) low-values - low-values in the collating sequence

high-values - high values in the collating sequence

Collating seqence - it finds equivalent values of each characters typed in the keyboard and precedence between characters.

In Pc ascii is the default collating and in mainframe ebcdic is the default collating.

5) if perform after is specified condn is tested at the end of execution.

Ex-
perform para-name with test after until knt > 10