scc

 1unsigned char s1[] = "hello";
 2signed char s2[] = "Hello";
 3char s3[] = "Hello World!";
 4
 5int
 6main()
 7{
 8	if (s1[1] != s2[1] || s1[1] != s3[1])
 9		return 1;
10	if (s1[2] != s2[2] || s1[2] != s3[2])
11		return 2;
12	if (s1[3] != s2[3] || s1[3] != s3[3])
13		return 3;
14	if (s1[4] != s2[4] || s1[4] != s3[4])
15		return 4;
16	return 0;
17}