Multiple choice perl

In Perl, scalar variables always begin with a ________ sign.

  1. #

  2. @

  3. %
  4. $
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In Perl, scalar variables (holding single values like strings or numbers) always begin with the $ sign. This sigil indicates a scalar variable. Arrays use @, hashes use %, and subroutines use &. The $ prefix makes it easy to identify scalar variables in code.

AI explanation

To answer this question, you need to understand the naming convention for scalar variables in Perl.

Option A) # - This option is incorrect because the # sign is used to indicate comments in Perl, not for naming variables.

Option B) @ - This option is incorrect because the @ sign is used to denote arrays in Perl, not for scalar variables.

Option C) % - This option is incorrect because the % sign is used to denote hashes in Perl, not for scalar variables.

Option D) $ - This option is correct because scalar variables in Perl always begin with the $ sign. Scalar variables hold single values, such as numbers or strings.

The correct answer is D. This option is correct because scalar variables in Perl are always denoted by the $ sign.

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