HERE IS MY PROBLEM
I'm interested in a function that opens for editing, then saves and closes in turn all the files in C:\DIRECTORY\
WHY THAT PROBLEM
The C:\DIRECTORY\ contains text files *.txt whose content should undergo some changes (that pertains to ALL THE FILES IN C:\DIRECTORY\). So I should open each file, edit, save and then close it. Everything is clear to me when dealing with concrete files but I have no idea of how to go through the unknown list of files in C:\DIRECTORY\.
Thanks in advance for any hint!