Write a C program to Implement a system of three processes which read and write numbers to a file. Each of the three processes P1, P2, and P3 must obtain an integer from the file (these instructions must be executed 200 times). The file only holds one integer at any given time. Given a file F, containing a single integer N, each process must perform the following steps 1. Fork two processes For 200 times: 2. Open F 3. Read the integer N from the file 4. Close F 5. Output N and the process' PID (On the screen) 6. Increment N by 1 7. Open F 8. Write N to F (overwriting the current value in F) 9. Close F

Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
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Chapter1: Computer Networks And The Internet
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ANSWERED
Wednesday, Sep 28, 2022
ENGINEERING COMPUTER-SCIENCE
Write a C program to Implement a system of three
processes which read and write numbers to a file.
Each of the three processes P1, P2, and P3 must
obtain an integer from the file (these instructions
must be executed 200 times). The file only holds one
integer at any given time. Given a file F, containing a
single integer N, each process must perform the
following steps
1. Fork two processes
For 200 times:
2. Open F
3. Read the integer N from the file
4. Close F
5. Output N and the process' PID (On the screen)
6. Increment N by 1
7. Open F
8. Write N to F (overwriting the current value in F)
9. Close F
b) Briefly describe why the processes P1, P2, and P3
obtain/read duplicates of numbers (why does a
particular integer x appear in the output of more
than one process)?
Suggest a solution (you do not need to implement it)
√x
8
Transcribed Image Text:← 8:12 ANSWERED Wednesday, Sep 28, 2022 ENGINEERING COMPUTER-SCIENCE Write a C program to Implement a system of three processes which read and write numbers to a file. Each of the three processes P1, P2, and P3 must obtain an integer from the file (these instructions must be executed 200 times). The file only holds one integer at any given time. Given a file F, containing a single integer N, each process must perform the following steps 1. Fork two processes For 200 times: 2. Open F 3. Read the integer N from the file 4. Close F 5. Output N and the process' PID (On the screen) 6. Increment N by 1 7. Open F 8. Write N to F (overwriting the current value in F) 9. Close F b) Briefly describe why the processes P1, P2, and P3 obtain/read duplicates of numbers (why does a particular integer x appear in the output of more than one process)? Suggest a solution (you do not need to implement it) √x 8
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