To run this test open two terminal windows. Start the program in one until you get the first message. Test in the second window that the directories hoho and hoh/haha were created.
Press enter and after the program has finished check that the directory disappeared.
Example mkdir.bas :
print "Now you have dir hoho/haha\n"
print "Press enter..."
line input q
print "Now you do not have dir hoho\n"