Consider a situation where we have a file shared between many people.  If one of the people tries editing the file, no other person should be reading or writing at the same time, otherwise changes will not be visible to him/her.  However if some person is reading the file, then others may read it at the same time. Precisely in OS we call this situation as the readers-writers problem Problem parameters:  One set of data is shared among a number of processes  Once a writer is ready, it performs its write. Only one writer may write at a time  If a process is writing, no other process can read it  If at least one reader is reading, no other process can write  Readers may not write and only read

Explanation:

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