1extern int a(void);
2extern int b(void);
3extern int c(void);
4
5static int or(void)
6{
7	return a() || b() || c();
8}
9
10static int and(void)
11{
12	return a() && b() && c();
13}
14/*
15 * check-name: Logical and/or
16 */
17
18