1 extern int a(void);
   2 extern int b(void);
   3 extern int c(void);
   4 
   5 static int or(void)
   6 {
   7         return a() || b() || c();
   8 }
   9 
  10 static int and(void)
  11 {
  12         return a() && b() && c();
  13 }
  14 /*
  15  * check-name: Logical and/or
  16  */
  17