scc

 1int main()
 2{
 3	int  count, n;
 4	char *from, *to;
 5	char a[39], b[39];
 6
 7	for(n = 0; n < 39; n++) {
 8		a[n] = n;
 9		b[n] = 0;
10	}
11	from = a;
12	to = b;
13	count = 39;
14	n = (count + 7) / 8;
15	switch (count % 8) {
16	case 0: do { *to++ = *from++;
17	case 7:      *to++ = *from++;
18	case 6:      *to++ = *from++;
19	case 5:      *to++ = *from++;
20	case 4:      *to++ = *from++;
21	case 3:      *to++ = *from++;
22	case 2:      *to++ = *from++;
23	case 1:      *to++ = *from++;
24			} while (--n > 0);
25	}
26	for(n = 0; n < 39; n++)
27		if(a[n] != b[n])
28			return 1;
29	return 0;
30}