This is designed to test your knowledge of how arguments get passed to subroutines.
Instructions for Newbies:
Part A
What do you think the output of the code below is?
Part B
Give an accurate explanation for your answer.
Part C
What happens when you replace "subroutine ();" in line 7 with "&subroutine;"? Why?
Instructions for Non-Newbies:
I'm not going to provide an immediate solution or explanation for this one. Feel free to drop hints and provide general guidance as you see fit.
The Code
1 #!/usr/bin/perl
2
3 use strict;
4
5 @_ = qw(alpha omega);
6 $_ = qw(nothing nothing);
7 subroutine ();
8
9 sub subroutine {
10 print "In the beginning there was $_[0], in the end there will
+be $_[1].\n";
11 }
Edit: chipmunk 2001-04-16
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