write a C++ Program

Write a simple sequence-number system through which two concurrent processes, P1 and P2 each obtain unique integers in the range [1, 100]. Use the fork() call to create P1 and P2. Given a file, F, containing a single number, each process must perform the following steps: a. Open F. b. Read the sequence number N from the file. c. Close F. d. Output N and the process' PID (either on screen or test file). e. Increment N by 1 f. Open F. g. Write N to F. h. Flush F. i. Close F. What are the problems that you observe? Describe the behavior of your program and provide evidence for your conclusion in form of test-output