Below is an example code using C++ programming language to delete all unnecessary files. This code deletes specific file types (for example, .txt, .pdf, .jpg) in a directory specified by the user.
This program prompts the user to enter the path of the directory where unnecessary files will be removed. Then, it checks each file in that directory one by one, and if it is suitable for the unnecessary file types (.txt, .pdf, and .jpg), it deletes them. Of course, before using this program, you must be sure to carefully check whether the files need to be deleted. Otherwise, important files may be accidentally deleted. (%appdata%,prefetch)