follow the style of code from examples folder
Considerations:
• Mutual exclusion and/or synchronization must be guaranteed using
semaphores.
• Check that you do not leave shared resources (semaphores, etc.) on the system.
Use ipcs, ipcrm and other available scripts.
• All input and output must be done with file descriptors. The use of printf, scanf,
FILE*, getchar, or similar is not allowed.
• Compile using the –Wall and –Wextra flags.
• Any practice that contains warnings will be unsuitable.
• All resources must be released, otherwise the practice will be unsuitable.
• At the beginning of the created .c, the logins and names and surnames of the
students who are taking part in the session must be commented.
• The program must ignore the CTRL+ C in this way if the user presses CTRL+ C, the
program must continue normallyc
