scc

 1#include <assert.h>
 2#include <stdio.h>
 3#include <string.h>
 4
 5/*
 6output:
 7testing
 8done
 9end:
10*/
11
12int
13main()
14{
15	char buf[30] = "abc";
16
17	puts("testing");
18	assert(strstr(buf, "abc") == buf);
19	assert(strstr(buf, "bc") == buf + 1);
20	assert(strstr(buf, "c") == buf + 2);
21	assert(strstr(buf, "d") == NULL);
22	strcpy(buf, "ababc");
23	assert(strstr(buf, "abc") == buf+2);
24	assert(strstr("", "abc") == NULL);
25	assert(strstr(buf, "") == buf);
26	buf[0] = '\0';
27	assert(strstr(buf, "") == buf);
28	puts("done");
29
30	return 0;
31}
32