Task

Verify that a file called     input.txt     and   a directory called     docs     exist.



This should be done twice:  

   once for the current working directory,   and
   once for a file and a directory in the filesystem root.


Optional criteria (May 2015):   verify it works with:

   zero-length files
   an unusual filename:     `Abdu'l-Bahá.txt  


LOGICAL :: file_exists
INQUIRE(FILE="input.txt", EXIST=file_exists)   ! file_exists will be TRUE if the file
                                               ! exists and FALSE otherwise
INQUIRE(FILE="/input.txt", EXIST=file_exists)