How to terminate a program in Perl - exit or die?

Question

I am using syntax checking to see whether my Perl script is being used in the correct way. If the syntax is not correct, I display a message saying what the correct syntax is, a

Answer 1

print prints to STDOUT but die prints to STDERR

exit 1 exits with exit status of 1 but die exits with exit current value of errno that is $!

Hence die is the preferred way as its simpler and shorter.