#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <pwd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/shm.h>
#include <sys/sem.h>
#include <sys/msg.h>
#include <stdio.h>
#include <sys/shm.h>
#include <sys/sem.h>

#define SEGSIZE 100



int main ()
{
	int id_ftok = ftok("1.c",129);
	int id_shmget = shmget(id_ftok, SEGSIZE, IPC_CREAT | 0660 );
	if (id_shmget == -1)
		perror("shmget");

	char *attach_segment = shmat(id_shmget, 0, 0);
int procpid = fork();
if(procpid == -1) exit(EXIT_FAILURE);
if(procpid == 0) {
/*tu kod potomka*/
printf("W pamieci wspoldzielonej znajduje sie: %s\n", attach_segment);








} else {
/* tu kod rodzica*/

	strcpy(attach_segment, "przykladowy tekst");
	if(wait(0)==-1)
	perror("wait");


if ( shmdt(attach_segment) == -1)
	{
		perror("shmdt");
		exit(-1);
	}


if ( shmctl(id_shmget, IPC_RMID, NULL) == -1 )
	{
		perror("shmctl");
		exit(-1);
	}










}




	return 0;
}