The COBOL perform loop is the equivalent of which of the following structures found in other languages, such as Java or C++
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For loop
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Do-While loop
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Method
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None of the Above
In COBOL, a PERFORM … UNTIL loop executes its body first and then checks the termination condition, matching the semantics of a do‑while loop in languages like Java or C++. A traditional for loop evaluates the condition before the first iteration, so the correct correspondence is a do‑while construct.
To answer this question, you need to understand the COBOL perform loop and its equivalent structure in other programming languages.
The COBOL perform loop is used to repeat a set of statements a certain number of times or until a condition is met. It is similar to the do-while loop found in other languages such as Java or C++.
Let's go through each option to understand why it is correct or incorrect:
Option A) For loop - The for loop is used to iterate a specific number of times. It has a defined initialization, condition, and increment/decrement, which is different from the COBOL perform loop. Therefore, option A is incorrect.
Option B) Do-While loop - The do-while loop is used to repeat a set of statements until a certain condition becomes false. This is the equivalent structure to the COBOL perform loop, as both allow for repeating a set of statements until a condition is met. Therefore, option B is correct.
Option C) Method - A method is a subprogram or a function that performs a specific task. It is not directly equivalent to the COBOL perform loop. Therefore, option C is incorrect.
Option D) None of the Above - Since the correct answer is option B, which states that the COBOL perform loop is equivalent to the do-while loop, option D is incorrect.
The correct answer is B) Do-While loop. This option is correct because the do-while loop is the equivalent structure to the COBOL perform loop, as both allow for repeating a set of statements until a condition is met.