How many type of reader and writer problems?  use semaphores to solve these problems , and explain them in detail.

Solution:

1. Two types are mentioned in the textbooks.

The first readers - writers problem, requires that no reader will be kept waiting unless a writer has already obtained permission to use the shared object . in other word , no reader should wait for other readers to finish simply because a writer is waiting .And writers may starve.

The second re