I need assistance so badly, i need somebody's brain right now
I was given a question some time ago that I am not sure of how to answer, the question is typed below: can anyone give me an idea of how i should go about doing this using C++
write code to help synchronize a professor and his/her students during office hours. The professor, of course, wants to take a nap if no students are around to ask questions; if there are students who want to ask questions, they must synchronize with each other and with the professor so that
only one person is speaking at any one time,
each student question is answered by the professor, and
no student asks another question before the professor is done answering the previous one.
You are to write four procedures: AnswerStart(), AnswerDone(), QuestionStart() , and QuestionDone().
The professor loops running the code: AnswerStart(); give answer; AnswerDone(). AnswerStart doesn't return until a question has been asked. Each student loops running the code: QuestionStart(); ask question; QuestionDone(). QuestionStart() does not return until it is the student's turn to ask a question. Since professors consider it rude for a student not to wait for an answer, QuestionEnd() should not return until the professor has finished answering the question.
write code to help synchronize a professor and his/her students during office hours. The professor, of course, wants to take a nap if no students are around to ask questions; if there are students who want to ask questions, they must synchronize with each other and with the professor so that
only one person is speaking at any one time,
each student question is answered by the professor, and
no student asks another question before the professor is done answering the previous one.
You are to write four procedures: AnswerStart(), AnswerDone(), QuestionStart() , and QuestionDone().
The professor loops running the code: AnswerStart(); give answer; AnswerDone(). AnswerStart doesn't return until a question has been asked. Each student loops running the code: QuestionStart(); ask question; QuestionDone(). QuestionStart() does not return until it is the student's turn to ask a question. Since professors consider it rude for a student not to wait for an answer, QuestionEnd() should not return until the professor has finished answering the question.
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Sounds like it's an assignment to practice multithreading. I presume each student and the professor reside in their own thread and the QuestionStart() etc functions are to keep all the thread in sync.
So start there. Make a Professor class and a Student class, have them create and run their own threads. Then spawn a professor and several students. The problem as listed in your post pretty much describes what the logic will look like:
So start there. Make a Professor class and a Student class, have them create and run their own threads. Then spawn a professor and several students. The problem as listed in your post pretty much describes what the logic will look like:
| Each student loops running the code: QuestionStart(); ask question; QuestionDone(). |
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