Question no#04:

Using an IPC means inter process communication to the question share one person to another person is called Pipe

Pipes<stdio.h>

Int pipe(int fd[2]);

fd: file descriptor.

popen(): A  person has been started  in program a new process started data from that location

FILE* popen(char*command, char*type);

returns a pointer to a NULL.

Pclose(): The function is used  by popen()

Int  pclose(FILE*stream_to_close);

Shared Memory<sys/shm.h>

This memory one person created and accesses other person

Shmget(): To allows in a process shared memory.

Int shmget(key_t key,size_t size,int shmflg);

Shmget(): Share memory modifiy & permission

Int shmctt(int shmid,int cmd,struct shmid_ds*buf);

Shmat(): Memory using segments.

Void*shmat(int shmid,const void*shmaddr,int shmflg);

Shmdt(): For detach memory segments.

Shmdt(const void *shmaddr):

Print(“Bytes written: % s\n”,message);

 return0;

}