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ft_substr.c
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ft_substr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_substr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ichettri <ichettri@student.42wolfsburg. +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/11/21 14:01:38 by ichettri #+# #+# */
/* Updated: 2023/12/08 20:32:01 by ichettri ### ########.fr */
/* */
/* ************************************************************************** */
/*
Description: Allocates (with malloc(3)) and returns a substring
from the string ’s’.
The substring begins at index ’start’ and is of
maximum size ’len’.
Return value: The substring.
NULL if the allocation fails.
*/
#include "libft.h"
// #include <stdio.h>
#include <stdlib.h>
char *ft_substr(char const *s, unsigned int start, size_t len)
{
char *sub;
size_t i;
size_t j;
if (!s)
return (NULL);
if (start >= ft_strlen(s))
return (ft_strdup(""));
if (len > ft_strlen(s + start))
len = ft_strlen(s + start);
sub = (char *)malloc(sizeof(char) * (len + 1));
if (!sub)
return (NULL);
i = start;
j = 0;
while (s[i] && j < len)
sub[j++] = s[i++];
sub[j] = '\0';
return (sub);
}
// int main(void)
// {
// char src[] = "Hello.bro.whats.up.bro";
// char *dest;
// dest = ft_substr(src, 6, 3);
// printf("%s\n", dest);
// return (0);
// }