Which of the following statements creates a scalar variable named height? a. my ( As Scalar); b

step 1 In this objective type question there are three statements given. So the statements are that is

Which of the following statements creates a scalar variable...

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Key Concepts

Declaration Syntax

Correct declaration syntax is essential in programming languages. In Perl, when creating a scalar variable, the syntax 'my $variable_name;' must be used. Knowing the proper syntax helps in preventing errors and ensures that variables are correctly interpreted by the interpreter.

Lexical Scoping with my

The 'my' keyword in Perl is used to declare variables with lexical scoping. This means that the variable is only available within the block or file in which it is declared. Understanding the use of 'my' is crucial for managing variable scope and avoiding unintended side effects in code.

Scalar Variables

Scalar variables are a fundamental data type in scripting languages like Perl, where they store single values such as numbers, strings, or references. In Perl, scalar variables are identified by a leading dollar sign ($), and proper syntax is key to ensuring they are defined correctly.

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