c program monitors a patient's room (processes and shared memory)

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I need a c program to monitor a patient's room, where doctors can enter the room one at a time, and can enter only if no visitors are in the room. . A visitor can only enter the room if no doctors are in the room and if zero or a maximum of 3 other visitors are in the room (one to four in total). This should be done using shared memory and semaphores, no threads! The program must allow the user to specify the input parameters at the command line. ( mutual exclusion should be implemented where appropriate, Avoid busy-waiting, starvation and deadlocks)

Software Architecture

项目 ID: 18299006

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