c preprocessor and indent problem in c-mode?

[YOUNG <breadncup@gmail.com>]

Hi,

If there is a following code, emacs does not present indent correctly.

#incude <stdio.h>

int main(void) {
  int a = 10;
#ifdef AAA
  if (a == 10) {
    printf("a:%d\n", a);
#else
    if (b == 10) {
      printf("b=10\n");
#endif
    }

#endif
  }

If the curly brace is not closed before the preprocessor, emacs seems
to confuse to make indent.

Is there anyone who know this problem and how to resolve?