Practical C Programming

How to do it…

1. Invoke the ftok function to generate an IPC key by supplying a filename and an ID.
2. Invoke the shmget function to allocate a shared memory segment that is associated with the key that was generated in step 1.
3. The size that's specified for the desired memory segment is 1024. Create a new memory segment with read and write permissions.
4. Attach the shared memory segment to the first available address in the system.
5. Enter a string that is then assigned to the shared memory segment.
6. The attached memory segment will be detached from the address space.

The writememory.c program for writing data into the shared memory is as follows:

#include <stdio.h>#include <sys/ipc.h>#include <sys/shm.h>#include <stdio.h>#include <stdlib.h>int main() ...