/***********/
/* prog2.c */
/***********/

#include <stdlib.h>
#include <stdio.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <string.h>

#define SHMKEY 30
#define TAILLE 1<<26

int main() {
  char *shm_adr;
  int shm_id;
  if ((shm_id = shmget(SHMKEY, TAILLE, 0700|IPC_CREAT)) < 0) {
    perror("shmget");
    return EXIT_FAILURE;
  }
  if ((shm_adr = shmat(shm_id, 0, 0)) < (char *) 0) {
    perror("shmat");
    return EXIT_FAILURE;
  }
  memset(shm_adr, 0, TAILLE);
  return EXIT_SUCCESS;
}