In a COBOL application, you are tasked with processing inventory items. Each item has a varying quantity that you need to update. Which type of PERFORM loop should you use, and how would you implement it?
- PERFORM THRU loop
- PERFORM UNTIL loop
- PERFORM VARYING loop
- PERFORM WITH TEST BEFORE loop
A PERFORM VARYING loop would be appropriate for processing inventory items with varying quantities. This loop type is useful when you need to iterate over a range of values. In this case, you can use it to iterate through the inventory items, updating the quantity for each item in the loop body.
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