ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bhielsch <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/10/07 16:16:58 by bhielsch          #+#    #+#             */
/*   Updated: 2022/10/07 16:18:33 by bhielsch         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <stdlib.h>
#include <stdio.h>
#include "libft.h"

char	*ft_substr(char const *s, unsigned int start, size_t len)
{
	char	*substr;
	size_t	i;
	char	*str;
	size_t	j;

	str = (char *)s;
	i = 0;
	if (start > ft_strlen(s))
		substr = (char *)malloc(1);
	else if (start + len > ft_strlen(s) && start <= ft_strlen(s))
		substr = (char *)malloc(ft_strlen((char *)s) - start + 1);
	else
		substr = (char *)malloc(len + 1);
	if (!substr)
		return (NULL);
	j = 0;
	while (str[i])
	{	
		if (i >= start && j < len)
			substr[j++] = str[i];
		i++;
	}
	substr[j] = '\0';
	printf("%p\n" substr);
	return (substr);
}

int	main()
{
	char	str[] = "1";
	unsigned int		start = 42;
	size_t			len = 42000000;
	printf("%s", ft_substr(str, start, len));
	return (0);
}