In a COBOL program, when using a PERFORM loop with the VARYING clause, what is the role of the INDEX variable?
- It is not applicable to PERFORM loops with the VARYING clause
- It is used to control the loop execution by specifying the increment value
- It represents the total number of iterations in the loop
- It serves as a loop counter, indicating the current iteration
The INDEX variable in a PERFORM loop with the VARYING clause is crucial as it acts as a loop counter, keeping track of the current iteration. Program logic can be based on the value of the INDEX variable within the loop.
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