#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <stdio.h>

void main(int argc, char *argv[])
{
int ShmID, *ShmPTR, status;
pid_t pid;
  ShmID = shmget(IPC_PRIVATE,4*sizeof(int),IPC_CREAT|0666);
  ShmPTR = (int *) shmat(ShmID, NULL, 0);
  ShmPTR[0] = atoi(argv[0]); ShmPTR[1] = atoi(argv[1]);
  ShmPTR[2] = atoi(argv[2]); ShmPTR[2] = atoi(argv[3]);
  if ((pid = fork()) == 0) {
    Child(ShmPTR);
    exit(0);
  }
  wait(&status);
  shmdt((void *) ShmPTR); shmctl(ShmID, IPC_RMID, NULL);
  exit(0);
}

void Child(int SharedMem[])
{
   printf(“%d %d %d %d\n”, SharedMem[0],
   SharedMem[1], SharedMem[2], SharedMem[3]);
}