Why does poll keep returning although there is no input?

Question

I wrote a small test program to figure out how to talk to poll. I created three files testa,testb,testc and wrote the string hel

Answer 1

Once you reach the end of a file, it remains readable so that poll will return immediately, and calling read will immediately return zero. You need to handle this condition, perhaps by closing it and removing it from the set of polls, where you're currently printing Strange.