You are working on a COBOL program where you need to process a list of customer names. Which type of PERFORM loop would be most appropriate for this task, and why?
- PERFORM THRU loop
- PERFORM UNTIL loop
- PERFORM VARYING loop
- PERFORM WITH TEST BEFORE loop
A PERFORM VARYING loop would be most appropriate for processing a list of customer names. This loop is used when there is a need to iterate through a range of values, such as processing elements in an array or a list. It allows you to control the loop by specifying the initial and final values, making it suitable for handling customer names sequentially.
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