#include <stdio.h>
#include <stdlib.h>

#include <sys/types.h>
#include <sys/wait.h>


int main()
{
  int mypid = getpid();
  int mykid;

  printf("%d: About to fork...\n",mypid);
  fflush(NULL);

  mykid = fork();
  if(mykid == 0)
    {
      // Child process path
      int mypid = getpid();
      int myparent = getppid();
      printf("  %d: This is child process %d of parent %d\n",mypid,mypid,myparent);
      fflush(NULL);
      exit(12);
    }

  int status;
  waitpid(mykid, &status, 0);
  printf("%d: Okay, child process %d has finished with exit code %d\n",mypid,mykid,WEXITSTATUS(status));
}