exam final

1 files changed, 38 insertions, 0 deletions

diff --git a/exam_final/rendu/ft_atoi/ft_atoi.c b/exam_final/rendu/ft_atoi/ft_atoi.c
new file mode 100755
index 0000000..2f125bf
--- /dev/null
+++ b/exam_final/rendu/ft_atoi/ft_atoi.c
@@ -0,0 +1,38 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoi.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: exam <marvin@42.fr>                        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/07/26 11:11:42 by exam              #+#    #+#             */
+/*   Updated: 2019/07/26 11:32:51 by exam             ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int		ft_atoi(const char *str)
+{
+	int	nb;
+	int	is_negative;
+
+	while (*str == ' ' || *str == '\t' || *str == '\n' || *str == '\r'
+			|| *str == '\v' || *str == '\f'|| *str == '\r')     
+		str++;
+	is_negative = 0;
+	if (*str == '+' || *str == '-')
+	{
+		if (*str == '-')
+			is_negative = 1;
+		str++;
+	}
+	nb = 0;
+	while (*str >= '0' && *str <= '9')
+	{
+		nb *= 10;
+		nb += *str - '0';
+		str++;
+	}
+	if (is_negative)
+		nb = -nb;
+	return (nb);
+}