For what purpose are you posting these?
You don't seem to take improvement suggestions into account, as per your last thread.
You don't seem to care that you're giving very bad instructions to beginners.
You're using non-standard C, obsolete software, and terrible coding practices.
You're contributing nothing but detriment to the programming world.
Wow, 17 minutes of watching a bad typist.
Nope....
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.