Which of the following function definition does not return any value?

The correct answer is C. A function that prints integers from 1 to 100. Option C is correct because a function that prints integers performs output as a side effect - it sends text to the console but does not produce a value that can be used or stored by the caller. In most languages, such a function implicitly returns void (or None in Python)…

Question

Which of the following function definition does not return any value?

Options

AA function that converts an uppercase letter to lowercase.
BA function that returns a random integer from 1 to 100.
CA function that prints integers from 1 to 100.

How the community answered

(21 responses)

A
10% (2)
B
19% (4)
C
71% (15)

Explanation

Option C is correct because a function that prints integers performs output as a side effect - it sends text to the console but does not produce a value that can be used or stored by the caller. In most languages, such a function implicitly returns void (or None in Python), meaning there is nothing to assign or pass on.

Option A is wrong because converting uppercase to lowercase must return the resulting character - otherwise the caller has no way to use the converted letter. Option B is wrong because generating a random integer only makes sense if that integer is returned to whoever called the function.

Memory tip: Ask yourself, "Could I store the result in a variable and use it later?" If yes, it returns a value. Printing just displays - it hands nothing back.

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