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  


def check_file(filename : String)
  if File.directory?(filename)
    puts "#{filename} is a directory"
  elsif File.exists?(filename)
    puts "#{filename} is a file"
  else
    puts "#{filename} does not exist"
  end
end
 
check_file("input.txt")
check_file("docs")
check_file("/input.txt")
check_file("/docs")