#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>

int main() 
{
  pid_t ret;

  if ((ret = fork()) == 0) {
    printf("I am the child process, pid = %d, parent pid = %d\n", getpid(),
           getppid());
  } else {
    printf("I am the parent process, pid = %d, ret = %d\n", getpid(), ret);
  }
  return(EXIT_SUCCESS);
}