Maybe you just want eval? Consider:

use strict;
use warnings;

my @operators = qw(+ - * /);
my $expression = (int rand(100)) . $operators[int rand(4)] . (int rand
+(100));
my $answer = eval $expression;
print "$expression = $answer";

[download]

Prints (for example):

78+63 = 141

[download]
DWIM is Perl's answer to Gödel

In reply to Re: string to expression by GrandFather
in thread string to expression by xiaoyafeng

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