Subroutines
The subroutine is separated function within the script. Subroutines always start with sub and name of the subroutine. You call on the subroutine withe the & (ampersand) followed by the name of the subroutine.
$num=10; &print_result; $num++; &print_result; $num*=5 &print_result; sub print_result { print "\$num is $num \n"; }
