Bareword "C" not allowed while "strict subs" in use at mytest.pl line 6.
Execution of mytest.pl aborted due to compilation errors (#1)
    (F) With "strict subs" in use, a bareword is only allowed as a
    subroutine identifier, in curly brackets or to the left of the "=>"
    symbol.  Perhaps you need to predeclare a subroutine?
    
Uncaught exception from user code:
	Bareword "C" not allowed while "strict subs" in use at mytest.pl line 6.
	Execution of mytest.pl aborted due to compilation errors.

shell returned 255