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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 bkuhn@ebb.org $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.
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