Orwell Dev-C++ with author authentication. Perfect for student homeworks, if you don't want your students to copy their homework files from others.
Authenticated files are regular source files with student's name and a security hash added at the end. Any cheating attempt by copying in the files / changing name will invalidate the hash and can be detected by the teacher. In addition, paste in authenticated files is only allowed from one's own files.
The CheckHash.exe tool checks the hash...