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my $num = 2;
print "Enter a number\n";
my $user_num = <STDIN>;
chomp $user_num;
if ($num eq== $user_num) {print "true\n"} else {print "false\n"};

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The == operator first converts its arguments into numbers by extracting digits from the front of each argument (along with a preceding + or -). Nonnumeric data in an argument is ignored, and the number consists of whatever digits were extracted. A string such as "goodpass" has no leading digits and , so it is thus converted to the numeral 0. Consequently, unless either $password or $correct contains leading digits, they will both be converted to 0 and will be considered equivalent.

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