How does perform until work in Cobol?

In ‘perform until’, a paragraph is executed until the given condition becomes true. ‘With test before’ is the default condition and it indicates that the condition is checked before the execution of statements in a paragraph.

What is perform statement in Cobol?

The PERFORM statement is used to transfer control explicitly to one or more procedures and to return control implicitly whenever execution of the specified procedure is complete. The PERFORM statement is used to control execution of one or more imperative statements which are in the scope of that PERFORM statement.

How do you exit a perform in Cobol?

The EXIT Statement. The EXIT statement provides a common end point for a series of procedures. The EXIT statement can also exit an inline PERFORM, a paragraph or a section. The EXIT PROGRAM statement marks the logical end of a called program.

Why We Use perform statement in Cobol?

The PERFORM statement transfers control explicitly to one or more procedures and implicitly returns control to the next executable statement after execution of the specified procedures is completed. When procedure-name-1 is specified. When procedure-name-1 is omitted.

What is the difference between stop run and go back in COBOL?

STOP RUN and GOBACK are two commonly used terms in COBOL programming. GOBACK is a statement which refers to the logical end of a given program in COBOL. STOP RUN, on the other hand, will terminate the program on its own or if called by a COBOL program.

What does next sentence do in COBOL?

The NEXT SENTENCE statement transfers control to the next COBOL sentence, that is, following the next period. It does not transfer control to the logically next COBOL verb as occurs with the CONTINUE verb.

What is 77 level used for in COBOL?

77 Level Number Uses, significance:77 is a special Level number in COBOL which is used to declare the Individual Elementary data items. Of course, Individual elementary data items can be declared using 01 level but 77 declared fields does not allow any sub ordinate data field declarations.

What are 66 and 88 level used for in COBOL?

In Cobol Level 66 is used for RENAMES clause and Level 88 is used for condition names.

How do you use redefines in COBOL example?

Example. 01 ITEM-1 PIC 9(5) USAGE DISPLAY. 01 ITEM-2 REDEFINES ITEM-1 PIC 9(03) USAGE COMP-3. You can redefine the redefined data item any number of times but you cannot redefine the redefining item.

When to execute varying in a COBOL statement?

Perform Varying In perform varying, a paragraph will be executed till the condition in Until phrase becomes true.

What does in line perform mean in COBOL?

In-Line PERFORM is used to perform the repetitive tasks within a paragraph or section itself. In other words, In-Line Perform does not call another paragraph/s or section/s. END-PERFORM. END-PERFORM. END-PERFORM. 1.

How to make a COBOL loop statement in Java?

GO TO para-name. GO TO para-1 para-2 para-3 DEPENDING ON x. If ‘x’ is equal to 1, then the control will be transferred to the first paragraph; and if ‘x’ is equal to 2, then the control will be transferred to the second paragraph, and so on.

How to execute a COBOL program in JCL?

DISPLAY ‘IN E-PARA’. JCL to execute the above COBOL program. When you compile and execute the above program, it produces the following result − In ‘perform until’, a paragraph is executed until the given condition becomes true.