Add libft and input handling

1 files changed, 45 insertions, 0 deletions

diff --git a/libft/ft_substr.c b/libft/ft_substr.c
new file mode 100644
index 0000000..81ca8c6
--- /dev/null
+++ b/libft/ft_substr.c
@@ -0,0 +1,45 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_substr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 21:58:31 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 15:39:38 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_substr(char const *s, unsigned int start, size_t len)
+{
+	unsigned int	slen;
+	size_t			i;
+	char			*result;
+
+	slen = ft_strlen(s);
+	if (start >= slen)
+		len = 0;
+	if (slen - start < len)
+		len = (slen - start);
+	result = malloc(len + 1);
+	if (!result)
+		return (0);
+	result[len] = '\0';
+	i = 0;
+	while (i < len)
+	{
+		result[i] = s[i + start];
+		i++;
+	}
+	return (result);
+}
+
+/* #include <stdio.h> */
+/* int main () */
+/* { */
+/*     char s[] = "Hello there"; */
+/*     char *substr = ft_substr(s, 0, 2); */
+/*     printf("%s\n", substr); */
+/* } */