In a COBOL program, what is the primary use of the VARYING clause within a PERFORM loop?
- To control the flow of execution in nested loops
- To define variables with varying data types
- To execute the loop only if a condition is met
- To iterate over a range of values for a loop variable
The VARYING clause in a PERFORM loop is used to iterate over a range of values for a loop variable, allowing the repeated execution of a block of code with different values during each iteration.
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