POSIX threads and fairness (semaphores)

Question

I have created a program in C that creates 2 buffers. The buffer indices hold single characters, \'A\' or \'b\' etc... In order to learn more about multithreading, I creat

Answer 1

Multi-threaded software only makes sense when

1. You have multiple core to play with
2. Some algorithms are easier to program

How do you define fair. Surely it is better if a core has nothing to do then they take on the work. Does it matter if one core never gets a lookin?