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ft_strnstr.c
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ft_strnstr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: gemartin <gemartin@student.42barc...> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/01/12 13:57:52 by gemartin #+# #+# */
/* Updated: 2022/01/25 19:31:38 by marvin ### ########.fr */
/* */
/* ************************************************************************** */
#include"libft.h"
char *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
size_t value;
size_t i;
size_t c;
i = 0;
c = 0;
if (ft_strlen(needle) == 0)
return ((char *)haystack);
value = len;
if (len > ft_strlen(haystack))
value = ft_strlen(haystack);
while ((i + ft_strlen(needle)) <= value)
{
c = 0;
while (haystack[i + c] == needle[c] && needle[c])
c++;
if (!needle[c] && haystack[i + c -1] == needle[c -1])
return (&((char *)haystack)[i]);
i++;
}
return (NULL);
}