Hi, Bret
You must tell perl what kinds of var the $i is, when 'use strict'. $i can be
a lexical var or a global var.
my $i = 1; # $i is a lexical var.
our $i = 1; # $i is a global var, perl 5.6+ only.
use vars qw($i); # also as global var, but can work under old perl
在 2005-02-25 15:55:00 您写道：
>I'm getting the following error in my code. If I define $i as my $i
>then everything works fine. What's wrong?
>
># while1.pl
>use strict ;
>use warnings ;
>
>$i = 1;
>
>while ($i < 10) {
> print "I am at $i\n";
> i++;
>}
># while1.pl
>
>
>
>Global symbol "$i" requires explicit package name at
>C:\BegPerl\while1.pl line 6
致
礼！
Xiaofang Zhou
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