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How does evaluate work in Cobol?

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How does evaluate work in Cobol?

EVALUATE provides a multi selection control during the program execution. EVALUATE used to validate multiple conditions in a single shot. If none of the EVALUATE satisfies, the statements coded under WHEN OTHER gets executed by default and control transfers to the next executable statement after EVALUATE.

How to write EVALUATE in COBOL?

COBOL EVALUATE statement

  1. EVALUATE statement is used for conditional processing in COBOL.
  2. It performs the various set of tasks- If multiple conditions need to be checked then EVALUATE is a better than IF-ELSE.
  3. EVALUATE {cond-for-evaluate} [ALSO] {cond-for-evaluate} [ALSO] …
  4. EVALUATE TRUE.
  5. EVALUATE LEVEL-88-COND.

Can we use if inside evaluate in Cobol?

EVALUATE We can use EVALUATE instead of set of nested IF statements to test several conditions. We can use EVALUATE to implement case structure or decision table. We can use following EVALUATE statement instead of above nested IF.

What is the use of evaluate statement?

EVALUATE statement is used for conditional processing which helps in eliminating a series of nested IF statements to test several conditions. The EVALUATE statement is very similar to the CASE construct common in many other programming languages.

What is evaluated statement?

The EVALUATE statement provides a shorthand notation for a series of nested IF statements. The EVALUATE statement can evaluate multiple conditions. The subsequent action depends on the results of these evaluations.

How do you write an Evaluate statement?

Evaluation Essay Outline

  1. Introduce the subject. Write a complete paragraph that introduces the subject.
  2. Create your thesis statement. Establish your thesis statement; this should include the overall judgement and the supporting reasons.

How does Cobol determine not equal condition?

Conditional Expressions Statements in COBOL program executed one after another….

Relational operator Can be written as Meaning of operator
IS EQUAL TO IS = Equal to
IS NOT EQUAL TO IS NOT = Not equal to
IS GREATER THAN OR EQUAL TO IS >= Is greater than or equal to
IS LESS THAN OR EQUAL TO IS <= Is less than or equal to

How do you do an evaluation?

  1. STEP 1: CLARIFY WHAT IS TO BE EVALUATED.
  2. STEP 2: ENGAGE STAKEHOLDERS.
  3. STEP 3: ASSESS RESOURCES AND EVALUABILITY.
  4. STEP 4: DETERMINE YOUR EVALUATION QUESTIONS.
  5. STEP 5: DETERMINE APPROPRIATE METHODS OF MEASUREMENT AND.
  6. STEP 6: DEVELOP EVALUATION PLAN.
  7. STEP 7: COLLECT DATA.
  8. STEP 8: PROCESS DATA AND ANALYZE RESULTS.

What should an evaluation have?

Start with a clear and measurable statement of objectives. Develop a theory about how program activities will lead to improved outcomes (a program logic) and structure the evaluation questions around that logic. Let the evaluation questions determine the evaluation method.

How do you declare occurs in Cobol?

An index is declared with Occurs clause using INDEXED BY clause. The value of index can be changed using SET statement and PERFORM Varying option. 01 WS-TABLE. 05 WS-A PIC A(10) OCCURS 10 TIMES INDEXED BY I.

Can I declare occurs in 01 level in Cobol?

The table element definition (which includes the OCCURS clause) is subordinate to the group item that contains the table. The OCCURS clause cannot appear in a level-01 description.

Is it possible to have multiple levels of evaluation in COBOL?

Coding WHEN OTHER is optional and can be coded based on the need. Nesting of EVALUATE statement is also possible in COBOL and below is an example of multiple levels of EVALUATE in COBOL. Here when country is INDIA,then another condition is checked for STATE and based on the value respective section gets executed.

When no condition matches when other will get executed in COBOL?

When no condition matches,then WHEN OTHER portion will get executed. Coding WHEN OTHER is optional and can be coded based on the need. Nesting of EVALUATE statement is also possible in COBOL and below is an example of multiple levels of EVALUATE in COBOL.

How to nest if-else statements in COBOL?

That can be achieved by using EVALUATE in COBOL as well. (then do the required part- this runs when the condition matches.) END-IF. Nesting of IF-ELSE is possible and below is the one of example which explains multiple IF ELSE statements.

What are the different versions of COBOL?

§COBOL V5.1: 2013, V5.2: 2015 –COBOL V5 EOM Sept 11, 2017 (announced Dec 6, 2016) §COBOL V6.1: 2016, V6.2: 2017 –Migrating to V6 is the same as migrating to V5, we will only say V6 in this talk

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