Tag: perl

To answer this question, you need to understand the difference between a function and a subroutine in Perl.

Option A) True - This option is correct. In Perl, the terms "function" and "subroutine" are often used interchangeably. Both refer to a block of code that performs a specific task and can be called or invoked from other parts of the program.

Option B) False - This option is incorrect. As explained above, in Perl, the terms "function" and "subroutine" are used interchangeably.

The correct answer is A) True.

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To answer this question, we need to understand the different switches used in Perl for printing out warnings about typographical errors in a script.

Option A) -P - This option is incorrect because the -P switch in Perl is used for enabling parsing of files with the .P extension. It does not relate to printing out warnings about typographical errors.

Option B) -W - This option is incorrect because the -W switch in Perl is used to enable all warnings, including additional warnings not covered by the -w switch.

Option C) -p - This option is incorrect because the -p switch in Perl is used to add a loop around your script, which makes it iterate over input lines and automatically prints each line.

Option D) -w - This option is correct because the -w switch in Perl is used to enable warnings. When enabled, it prints out warnings about typographical errors in your script.

Therefore, the correct answer is D) -w. This option is correct because it is used in Perl to print out warnings about typographical errors in your script.

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To answer this question, we need to understand the functionality of the "stat" function in Perl. The "stat" function in Perl is used to retrieve information about a file or a filehandle. It returns a thirteen-element array that contains various attributes of the file.

Let's go through each option to understand which values are returned by the "stat" function:

Option A) Perl version ID - This option is incorrect. The "stat" function does not return the Perl version ID. It provides information about the file, not the Perl version.

Option B) Web server ID - This option is incorrect. The "stat" function does not return the Web server ID. It provides information about the file, not the web server.

Option C) Last access - This option is correct. The "stat" function returns the last access time of the file as one of the elements in the array.

Option D) Inode number - This option is correct. The "stat" function returns the inode number of the file as one of the elements in the array.

So, options C and D are correct. Therefore, the correct answer is E) C&E, as both options C and D are returned by the "stat" function in Perl.

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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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