Perl Basics

Declare a scalar and print it.

Perl

use strict;
use warnings;
my $name = "Ada";
print "Hello, $name\n";

Output

Hello, Ada

Explanation

A scalar variable starts with $. strict and warnings catch common mistakes. print writes the interpolated string.

Explore the dry run

Guided walkthroughReady

1use strict;

2use warnings;

3my $name = "Ada";

4print "Hello, $name\n";

Start to inspect the source, values, and output. These prepared steps explain the published sample; grouped loop steps describe multiple iterations.

View the complete dry-run table

Prepared trace of the published program. Some rows group repeated iterations.
Step / line	What happens	State after step	Output so far
	Declare a scalar variable.	`$name = "Ada"`	—
	Interpolate name and print a newline.	`$name = "Ada"`	Hello, Ada