Setup and current progress

Forgot to commit earlier...

1 files changed, 45 insertions, 0 deletions

diff --git a/ft_atoi.c b/ft_atoi.c
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index 0000000..6f7bd55
--- /dev/null
+++ b/ft_atoi.c
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+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoi.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 16:25:27 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/06 19:41:51 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_atoi(const char *str)
+{
+	int	result;
+	int	i;
+	int	posneg;
+
+	posneg = 1;
+	result = 0;
+	i = 0;
+	while (str[i] >= '\t' && str[i] <= '\r' || str[i] == ' ')
+	{
+		i++;
+	}
+	if (str[i] == '-')
+	{
+		posneg = -1;
+		i++;
+	}
+	while (str[i] >= '0' && str[i] <= '9')
+	{
+		result = 10 * result + str[i] - '0';
+		i++;
+	}
+	return (result * posneg);
+}
+
+/* #include <stdio.h> */
+/* #include <stdlib.h> */
+/* int main() { */
+/*     char str[] = "         -42eaeouai"; */
+/*     printf("atoi: %d\n", atoi(str)); */
+/*     printf("ft_atoi: %d\n", ft_atoi(str)); */
+/* } */