-
Notifications
You must be signed in to change notification settings - Fork 0
/
ft_strchr.c
45 lines (42 loc) · 1.94 KB
/
ft_strchr.c
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
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strchr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lgasc <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/02/02 17:57:21 by lgasc #+# #+# */
/* Updated: 2023/03/02 17:32:14 by lgasc ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
/** Returns a pointer to the first occurrence of
* the `character` in the `string`.
* @param[in] string The string in which to search `character`.
* @param[in] character The character to be searched in `string`.
* @remarks Here "character" means "byte";
* this function do not work with wide or multibyte characters.
* @returns A pointer to the matched character or
* NULL if the `character` is not found. The terminating null byte is
* considered part of the `string`, so that if `character` is specified as
* '\0', this function returns a pointer to the terminator.
* @remark This function aims to replicate the `libc` function `strchr`.
*/
char *ft_strchr(const char *string, int character)
{
unsigned int i;
if (! string)
return (NULL);
i = 0;
while (string[i])
{
if (((const unsigned char *const) string)[i]
== (const unsigned char) character)
return (& ((char *const) string)[i]);
i++;
}
if (((const unsigned char *const) string)[i]
== (const unsigned char) character)
return (& ((char *const) string)[i]);
return (NULL);
}