Hello Dear All,

Happy New Year!

I am trying to evaluate a logical expression and find its value

My code looks like below:

#!/usr/bin/perl
use strict;
use warnings;

my $when = '(!(C)&T)&!Q';
my %pinValsH = ();
my @pinsA = qw (C T Q);
foreach my $pin (@pinsA) {
 $pinValsH{$pin} = 0b1; 
}
&evalLogicExpr($when, \%pinValsH);
sub evalLogicExpr {
 #my $self = shift;
 my $whenCond = shift;
 my $pinValsHRef= shift;
 my $newExpr = $when;
 $newExpr =~ s/\&+/\&\&/g; 
 $newExpr =~ s/\|+/\|\|/g; 
 foreach my $pin (keys %{$pinValsHRef}) {
  printf "%s %s %b\n", "NAME ", $pin,$pinValsHRef->{$pin};
  if($newExpr =~ /(.*)($pin)(.*)$/) {
   $newExpr =~ s/(.*)($pin)(.*)$/$1$pinValsHRef->{$pin}$3/g;
  }
 }
 print "EXPR = ",$newExpr,"\n";
 printf "%b\n", $newExpr;
}

[download]

I saved the above code into a file called  nBool.pl When I run it, I get the following:

NAME  Q 1
NAME  T 1
NAME  C 1
EXPR = (!(1)&&1)&&!1
Argument "(!(1)&&1)&&!1" isn't numeric in printf at ./nBool.pl line 26
+.
0

[download]

Please tell me what am I doing wrong.

Thanks

Andy

In reply to Logic expression evaluation not working. What am I doing wrong? by perl_learner_2016

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