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ft_strnstr.c
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ft_strnstr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: sizerese <sizerese@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/07/28 21:57:16 by sizerese #+# #+# */
/* Updated: 2023/08/03 23:11:34 by sizerese ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
size_t i;
size_t j;
i = 0;
if (needle[0] == '\0')
return ((char *)haystack);
if (!haystack && len == 0)
return (NULL);
while (haystack[i] && i < len)
{
j = 0;
while (needle[j] && haystack[i + j] && (haystack[i + j] == needle[j])
&& (i + j) < len)
{
j++;
}
if (needle[j] == '\0')
return ((char *)haystack + i);
i++;
}
return (0);
}
/*
int main(void)
{
const char hay[] = "hello3";
const char needle[] = "o";
printf("%s\n", ft_strnstr(hay, needle, 5));
printf("%s\n", strnstr(hay, needle, 5));
}
*/