Perl Language Control Statements Conditionals
Example
Perl supports many kinds of conditional statements (statements that are based on boolean results). The most common conditional statements are if-else, unless, and ternary statements. given statements are introduced as a switch-like construct from C-derived languages and are available in versions Perl 5.10 and above.
If-Else Statements
The basic structure of an if-statement is like this:
if (EXPR) BLOCK if (EXPR) BLOCK else BLOCK if (EXPR) BLOCK elsif (EXPR) BLOCK ... if (EXPR) BLOCK elsif (EXPR) BLOCK ... else BLOCK For simple if-statements, the if can precede or succeed the code to be executed.
$number = 7; if ($number > 4) { print "$number is greater than four!"; } # Can also be written this way print "$number is greater than four!" if $number > 4; 
