COBOL - What is an in line PERFORM? When would you use it? Anything else to say about it?

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What is an in line PERFORM? When would you use it? Anything else to say about it?

The PERFORM and END-PERFORM statements bracket all COBOL II statements between them. The COBOL equivalent is to PERFORM or PERFORM THRU a paragraph. In line PERFORMs work as long as there are no internal GO TOs, not even to an exit. The in line PERFORM for readability should not exceed a page length - often it will reference other PERFORM paragraphs.

Total Answers and Comments: 5

Last Update: September 20, 2008

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Best Rated Answer

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Submitted by: suma_infy

In In-line PERFORM the procedure name is omitted. An In-line PERFORM must be delimited by the END-PERFORM statement.

SYNTAX:

PERFORM

Imperative Statements

END-PERFORM.
eg:

ACCEPT WS-NAME

PERFORM UNTIL WS-NAME=‘JOHN’

ACCEPT WS-NAME

DISPLAY “THE NAME OF EMPLOYEE : ‘ WS-NAME

END-PERFORM

Above answer was rated as good by the following members:
ramanach, Nitin2cpg, glipkin3

January 18, 2006 04:14:49

poonguzhali

RE: What is an in line PERFORM? When would you use it...

Perform stmt doesn't contain any paragraph name it will perform all the instructions with in that.

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April 30, 2007 10:02:08

Suganj

Member Since: February 2007 Contribution: 13

RE: What is an in line PERFORM? When would you use it...

Hi
When the body of the perform is not used in any other para. when the body of the perform is used in any other para then it's better to use the code in separate para and use PERFORM paraname instead of using in-line perform.

Hope u got it.

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August 26, 2007 23:21:07

Daryljax

Member Since: August 2007 Contribution: 3

RE: What is an in line PERFORM? When would you use it...

Examples: inline:

PERFORM UNTIL X > 10
...
END-PERFORM.

PERFORM WHILE X < 11
...
END-PERFORM.

Examples: Non-inline:

PERFORM 1000-READ-FILEA THRU 1000-READ-EXIT UNTIL x > 10.

PERFORM 1000-READ-FILEA THRU 1000-READ-EXIT WHILE X < 11.

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Overall Rating: +2

September 28, 2007 08:21:34

sudhakar chandu

RE: What is an in line PERFORM? When would you use it...

In-line perform is a concept where the control will execute a block of statements residing in a same paragraph and here the control will not shift form one paragraph to another paragraph.

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September 20, 2008 04:39:25

suma_infy

Member Since: July 2008 Contribution: 3

RE: What is an in line PERFORM? When would you use it? Anything else to say about it?

In In-line PERFORM the procedure name is omitted. An In-line PERFORM must be delimited by the END-PERFORM statement.

SYNTAX:

PERFORM

Imperative Statements

END-PERFORM.
eg:

ACCEPT WS-NAME

PERFORM UNTIL WS-NAME ‘JOHN’

ACCEPT WS-NAME

DISPLAY “THE NAME OF EMPLOYEE : ‘ WS-NAME

END-PERFORM

Is this answer useful? Yes | No

2 0

Overall Rating: +2

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