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ft_strnstr.c
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ft_strnstr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: jaehejun <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/03/28 22:41:55 by jaehejun #+# #+# */
/* Updated: 2023/04/08 10:05:01 by jaehejun ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
int index;
if (*needle == '\0')
return ((char *)haystack);
while (*haystack != '\0' && len > 0)
{
index = 0;
while (*(haystack + index) == *(needle + index) && len - index > 0)
{
index++;
if (*(needle + index) == '\0')
return ((char *)haystack);
}
haystack++;
len--;
}
return (NULL);
}