You need to evaluate the statements as though they were part of your program rather than data:
#!/usr/bin/perl
use strict;
use warnings;
{
my $a = 20;
my $b = 20;
my $c = 'dog';
open IN, "<", 'tmp/tmp.dat' or die "can't open file\n";
while (my $line = <IN>){
my $statement = $line;
chomp ($statement);
print "$statement\n";
##Less confusing?
if (eval($statement)){
print "true\n";
}
}
}
WARNING eval is a HUGE security risk and anything can happen if you don't have rigid control over the input
print "Good ",qw(night morning afternoon evening)[(localtime)[2]/6]," fellow monks."
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are good places to start.
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