-
Notifications
You must be signed in to change notification settings - Fork 0
/
ft_memmove.c
51 lines (46 loc) · 1.61 KB
/
ft_memmove.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
46
47
48
49
50
51
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memmove.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: hicunha- <hicunha-@student.42porto.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/10/04 00:15:27 by hicunha- #+# #+# */
/* Updated: 2023/10/04 00:15:27 by hicunha- ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdlib.h>
#include "libft.h"
void *ft_memmove(void *dest, const void *src, size_t n)
{
size_t i;
char *ptr_dest;
const char *ptr_src;
i = -1;
ptr_dest = dest;
ptr_src = src;
if (!ptr_dest && !ptr_src)
return (NULL);
if (ptr_dest < ptr_src && ptr_dest + n > ptr_src)
{
while (++i < n)
ptr_dest[i] = ptr_src[i];
}
else
{
i = n + 1;
while (--i > 0)
ptr_dest[i - 1] = ptr_src[i - 1];
}
return (dest);
}
/*#include <stdio.h>
#include <string.h>
int main() {
char str[] = "Hello, World!";
char *ptr;
ptr = ft_memmove(str + 7, str, 5); // Copy "World" to overlap "Hello"
printf("%s\n", str); // Output: "Hello, World!"
printf("%s", ptr);
return 0;
}*/