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/* zombie test. */
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
  pid_t pid;
  switch(pid = fork())
    {
    case -1:
      perror("fork failed");
      exit(1);
    case 0:
      printf(" CHILD: My PID is %d, My parent's PID is %d\n", getpid(), getppid());
      exit(0);
    default:
      printf("PARENT: My PID is %d, My child's PID is %d\n", getpid(), pid);
      printf("PARENT: I'm now looping...\n");
      while(1);
    }
  exit(0);
}