Delve into Perl, a popular text processing language. Gain insights into loops, strings, and arrays, progressing to complex data structures and packages. No prior knowledge required.

alpine2.tar.gz

Perl is one of the most popular text processing languages in the world. It allows you to create extremely efficient text parsers for all sorts of applications.

This interactive course will help you get up to speed on Perl, starting off with basic concepts like loops, strings, and arrays. You'll build your way up to more complex topics like data structures and packages.

No background knowledge is needed. Anyone willing to understand the principles and syntax of Perl to use it in the future will find this course useful.

Learn Perl from Scratch

Which of the loops is not a pretest loop?

Which of the loops is not a pretest loop?

```
for($i=0; $i<10; $i++){
 for($j=1; $j<i+2; $j++){
 }
		}
```

```
for($i=0; $i<10; $i++){
 print "i= $i";
}
for($j=1; $j<i+2; $j++){ 
		print "j= $j";
}
```

```
for($i=0; $i<10; $i++){
 while($j%2!=0)
 { print"$j";
 	$j++;}
}
```

```
while($j%2!=0){
				for($i=0; $i<10; $i++){
 print "$j";
 $j++;
 }
}
```

Which of the following is not a nested loop?

Which of the following is not a nested loop?

Testing condition is checked before each iteration

The while loop statements must terminate with a semi-colon

The for loop can be duplicated using a while loop

Which of the following statements about the while loop is not true?

Which of the following statements about the while loop is not true?

Foreach loops do not keep track of index.

Foreach loops do not keep track of index.

In the code below, when will the line `$i = $i + 1;` execute?
```
while ( $i <= 10){
	$i = $i + 1;
}
```

In the code below, when will the line <code>$i = $i + 1;</code> execute?
<pre><code>while ( $i &lt;= 10){
	$i = $i + 1;
}
</code></pre>

Runs as long as the condition specified is true

Runs as long as the condition specified is false

Quiz to test your understanding of loops in Perl.

Getting Started

Variables

Operators

Conditional Statements

Loops

Subroutines

Strings

Arrays

Packages

Conclusion

Quiz on Loops