unless else statement in perl

In Perl, the unless statement can be used with an else clause to execute code when the condition is true. The syntax for an unless else statement is as follows:

unless (condition) {
    # code to be executed if condition is false
}
else {
    # code to be executed if condition is true
}

Here is an example to demonstrate how unless else statement works:

my $number = 10;

unless ($number == 10) {
    print "The number is not 10.\n";
}
else {
    print "The number is 10.\n";
}

In this example, since the condition $number == 10 is true, the output will be:

The number is 10.

If the value of $number were not 10, the output would have been:

The number is not 10.

Note that the unless else statement is similar to the if else statement, but the condition is inverted. The unless statement is used when you want to execute code when a condition is false, and the if statement is used when you want to execute code when a condition is true.