1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
/*
* strchr --- search a string for a character
*
* We supply this routine for those systems that aren't standard yet.
*/
#if 0
#include <stdio.h>
#endif
char *
strchr(str, c)
const char *str, c;
{
if (c == '\0') {
/* thanks to Mike Brennan ... */
do {
if (*str == c)
return (char *) str;
} while (*str++);
} else {
for (; *str; str++)
if (*str == c)
return (char *) str;
}
return NULL;
}
/*
* strrchr --- find the last occurrence of a character in a string
*
* We supply this routine for those systems that aren't standard yet.
*/
char *
strrchr(str, c)
const char *str, c;
{
const char *save = NULL;
for (; *str; str++)
if (*str == c)
save = str;
return (char *) save;
}
|
