2.1.3.2 Examples of Interpolation

Let us consider an example that uses a few of these characters:

#!/usr/bin/perl

use strict;
use warnings;

print "A backslash: \\\n";
print "Tab follows:\tover here\n";
print "Ring! \a\n";
print "Please pay bkuhn\@ebb.org \$20.\n";

This program, when run, produces the following output on the screen:

A backslash: \
Tab follows:	over here
Ring!
Please pay [email protected] $20.

In addition, when running, you should hear the computer beep. That is the output of the `\a' character, which you cannot see on the screen. However, you should be able to hear it.

Notice that the `\n' character ends a line. `\n' should always be used to end a line. Those students familiar with the C language will be used to using this sequence to mean newline. When writing Perl, the word newline and the `\n' character are roughly synonymous.