FBISE, NCP & NBF-aligned resources for Classes 9–12
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Computer Chapter 3 : Topic 5.3
Calling functions to verify results
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A student writes a JavaScript program where separate functions are created for calculations, and another part of the code calls these functions to display results. What is the main advantage of this structure?
Reasoning: Calling functions allows outputs to be checked independently, making it easier to verify correctness.
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Why is it important in JavaScript programs to call functions after defining them when checking results?
Reasoning: A function must be called to execute its code and produce output for verification.
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A programmer creates a function to calculate the average of numbers but does not call it anywhere in the program. What is the result?
Reasoning: Without a function call, the code inside the function is not executed.
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A student calls a function multiple times with different inputs to check whether it produces correct outputs. What concept is being applied?
Reasoning: Repeated function calls with different inputs help verify correctness of logic (testing behavior).
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What is the primary purpose of calling functions in a JavaScript program during development?
Reasoning: Function calls execute code so results can be checked and validated.
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A student writes a function for checking whether a number is even or odd and calls it with different values. Why is this approach useful?
Reasoning: Testing with different inputs ensures the function works correctly in all cases.
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Which practice best ensures that a JavaScript function is producing correct results?
Reasoning: Testing functions through multiple calls confirms correctness across different scenarios.
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A programmer uses a function to calculate total marks and repeatedly calls it during testing. What is being evaluated?
Reasoning: Repeated calls help verify whether the function produces correct and cconsistent results.
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In JavaScript development, why is separating function definition and function call considered good practice?
Reasoning: Separating definition and calls allows controlled testing of functions, improving debugging and validation.
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