#!perl -T
print 42;

##</code><code>##

C:\Users\burak\Desktop>perl foo.pl
"-T" is on the #! line, it must also be used on the command line at foo.pl line 1.

C:\Users\burak\Desktop>


##</code><code>##

C:\Users\burak\Desktop>perl -T foo.pl
42
C:\Users\burak\Desktop>