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1.1 root 1: /*-
2: * Copyright (c) 1990 The Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms are permitted provided
6: * that: (1) source distributions retain this entire copyright notice and
7: * comment, and (2) distributions including binaries display the following
8: * acknowledgement: ``This product includes software developed by the
9: * University of California, Berkeley and its contributors'' in the
10: * documentation or other materials provided with the distribution and in
11: * all advertising materials mentioning features or use of this software.
12: * Neither the name of the University nor the names of its contributors may
13: * be used to endorse or promote products derived from this software without
14: * specific prior written permission.
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
16: * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
17: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18: */
19:
20: #if defined(LIBC_SCCS) && !defined(lint)
21: static char sccsid[] = "@(#)index.c 5.6 (Berkeley) 6/23/90";
22: #endif /* LIBC_SCCS and not lint */
23:
24: #include <string.h>
25: #include <stddef.h>
26:
27: char *
28: #ifdef STRCHR
29: strchr(p, ch)
30: #else
31: index(p, ch)
32: #endif
33: register char *p, ch;
34: {
35: for (;; ++p) {
36: if (*p == ch)
37: return(p);
38: if (!*p)
39: return((char *)NULL);
40: }
41: /* NOTREACHED */
42: }
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