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Unless statement in Perl

By Chaitanya Singh | Filed Under: Perl

unless statement in perl behaves just opposite to the if statement in perl. It executes the set of statements inside its body when the given condition is false.

unless(condition) {
   statement(s);
}

The statements inside unless body would execute when the condition is false.

Example

#!/usr/local/bin/perl

printf "Enter any number:";
$num = <STDIN>;
unless($num>=100) {
   printf "num is less than 100\n";
}

Output:

Enter any number:99
num is less than 100

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Perl Tutorial

  • Perl Tutorial
  • Perl Installation
  • First Perl Program
  • Perl Syntax
  • Data types in Perl
  • Perl Variables
  • my keyword
  • Perl Scalars
  • Use strict and use warnings
  • Perl Arrays
  • Perl Hashes
  • Operators in Perl
  • Perl Conditional statements
  • Perl if
  • Perl if-else
  • Perl if-elsif-else
  • Perl unless
  • Perl unless-else
  • Perl unless-elsif-else
  • Perl switch case
  • Perl given-when-default
  • Perl loops
  • Perl subroutines
  • Perl Strings
  • Perl Escape Sequences

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