What is subroutines (sub) in Perl?

In Perl, a subroutine (often referred to as a "sub") is a reusable block of code that performs a specific task. Subroutines can take parameters, execute a set of statements, and return values. They help in organizing code into manageable sections and promote reusability. Defining a subroutine allows you to call it from various parts of your program, making your code cleaner and easier to maintain.

Example of a Subroutine in Perl

sub greet { my $name = shift; # Get the first argument passed to the subroutine return "Hello, $name!"; # Return a greeting message } my $message = greet("Alice"); # Call the subroutine and store the returned value print $message; # Output: Hello, Alice!

subroutines Perl reusable code programming code organization

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