CODEWITHSUNDEEP
perlmodule
Rohit Fegade
Rohit Fegade

Reputation: 33

Undefined subroutine &main::add called at ex1.pl line 4

I have a perl Module

MyMathLib.pm

package MyMathLib;
require Exporter;

@ISA = qw/EXPORTER/;

@EXPORT = qw/add/;

sub add
{
  $_[0] + $_[1];
}

1;

Ex1.pl

#!usr/bin/perl
#
use MyMathLib;
print add(1,2);

I am getting the below error:

Undefined subroutine &main::add called at ex1.pl line 4.

What could be the reason?

Upvotes: 3

Views: 3307

Answers (1)

martin clayton
martin clayton

Reputation: 78115

It's an Exporter not an EXPORTER.

If you include

use strict;
use warnings;

in your scripts you'll activate more checks that would have shown you a clue to the problem:

Can't locate package EXPORTER for @MyMathLib::ISA at Ex1.pl line 5.
Undefined subroutine &main::add called at Ex1.pl line 6.

Upvotes: 4

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