Diff. between subscript and index with examples

karthi_ind · Posted: Tue May 04, 2004 10:10 pm

hello everybody

1. Explain call by value and call by reference with examples.

2. Explain STRING function WITH POINTER option.

3. Explain Static Call and Dynamic call with examples.

4. Diff. between subscript and index with examples.

5. Diff. between Search and Search All.

Plz answer these questions early. These are mostly asked interview questions.

bye

karthi G.

mvs_butta · New User Joined: 23 Dec 2003 Posts: 13

These are all basic questions , you can find the answers in any standard cobol book or refer to any manual

pankajupadhyay · New User Joined: 04 May 2007 Posts: 13 Location: pune

if u want to sand only value of a particular variable from main pgm to sub pgm then its called called call by value, in this method main pgm and sub pgm use diffrent memory location .
when u use call by refrence that means u are sending address of identifier which u sending from main pgm to sub pgm , in that case sending and reciving feild use same memory location. ex

MAIN PGM.
W-S SECTION.
77 A PIC 999 VALUE IS 20.
77 B PIC 999 VALU IS 30
77 C PIC 999 VALUE ZEORS.
PROC.. DIV..

CALL 'SUBPGM' USING CALL BY VALUE A,B.
CALL BY REFRENCE C.
DISPLAY A
DISPLAY B
DISPLAY C
---------------------------------------------------------
SUB PGM.
L-K SECTION.
77 P PIC 999.
77 Q PIC 999.
77 R PIC 999.
PROCEDURE DIVISION USING P, Q ,R.
COMPUTE C = A + B.
DISPLAY C.

-----------------------------
OUT PUT
A = 20
B= 30
C= 50
P =20
Q= 30
R= 50
Here c and r using same memory location
but a, b and p,q are not

pankajupadhyay · New User Joined: 04 May 2007 Posts: 13 Location: pune

subscript is integer variable which u define in a w-s section
but index is displacement which u write along with table declaration
with occurs clause

pankajupadhyay · New User Joined: 04 May 2007 Posts: 13 Location: pune

search is seq. search but search all use for binary search.
search is good for small records and search all good for big records

and u can also add diff b/w seq and binary search

dick scherrer · Posted: Sun May 06, 2007 11:11 pm

Hello,

You will find additional info about each of your questions if you search the forums.

Each has already been answered.