#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>

static char *str1 = "OP1\n";
static char *str2 = "AB2\n";

int main()
{
  int f1, f2;
  

  f1 = open ("mytmp", O_RDWR | O_CREAT | O_TRUNC, 0777);

  pid_t t = fork();
  if (t == -1) {
	  printf("fork failed\n");
  } else if (t == 0) {
          write(f1, str1, strlen(str1));
  } else {
          write(f1, str2, strlen(str2));
  }

  // no wait, Is this ok?
  return 0;
}