Hello Monks,

Although that this question should have a simple answer I can not understand where I am going wrong. I am using a Linux OS and I executing the following part of code:

#!/usr/bin/perl
use strict;
use warnings;
use Time::HiRes qw( clock_gettime clock_getres );

my $realtime   = clock_gettime('CLOCK_REALTIME');
my $resolution = clock_getres('CLOCK_REALTIME');

print "Realtime: ".$realtime."\n";
print "Resolution: ".$resolution."\n";
[download]

I am getting this error:

Argument "CLOCK_REALTIME" isn't numeric in subroutine entry at test.pl
+ line 6.
Argument "CLOCK_REALTIME" isn't numeric in subroutine entry at test.pl
+ line 7.
Realtime: 1411038919.69833
Resolution: 1e-09
[download]

According to Time::HiRes the syntax should not include the single quotes and it should be modified accordingly:

#!/usr/bin/perl
use strict;
use warnings;
use Time::HiRes qw( clock_gettime clock_getres );

my $realtime   = clock_gettime(CLOCK_REALTIME);
my $resolution = clock_getres(CLOCK_REALTIME);

print "Realtime: ".$realtime."\n";
print "Resolution: ".$resolution."\n";
[download]

But I get the following error when I execute the code:

Bareword "CLOCK_REALTIME" not allowed while "strict subs" in use at te
+st.pl line 6.
Bareword "CLOCK_REALTIME" not allowed while "strict subs" in use at te
+st.pl line 7.
Execution of test.pl aborted due to compilation errors.
[download]

Any ideas why I am getting this error on both cases?

Thank you in advance for your time and effort to assist me.