From 264ae2f047a53ffac92271e4609038d17605738e Mon Sep 17 00:00:00 2001 From: Charles Date: Fri, 26 Jul 2019 23:17:36 +0200 Subject: exam final --- exam_final/rendu/ft_itoa/ft_itoa.c | 64 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100755 exam_final/rendu/ft_itoa/ft_itoa.c (limited to 'exam_final/rendu/ft_itoa') diff --git a/exam_final/rendu/ft_itoa/ft_itoa.c b/exam_final/rendu/ft_itoa/ft_itoa.c new file mode 100755 index 0000000..308cb41 --- /dev/null +++ b/exam_final/rendu/ft_itoa/ft_itoa.c @@ -0,0 +1,64 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* ft_itoa.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: exam +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2019/07/26 11:35:43 by exam #+# #+# */ +/* Updated: 2019/07/26 12:32:57 by exam ### ########.fr */ +/* */ +/* ************************************************************************** */ + +#include + +int count_len(int nbr) +{ + int counter; + unsigned int u_nbr; + + if (nbr == 0) + return (1); + counter = 0; + u_nbr = nbr; + if (nbr < 0) + { + counter++; + u_nbr = -nbr; + } + while (u_nbr > 0) + { + u_nbr /= 10; + counter++; + } + return (counter); +} + +char *ft_itoa(int nbr) +{ + char *str; + int len; + int is_negative; + unsigned int u_nbr; + + len = count_len(nbr); + if ((str = (char*)malloc(sizeof(char) * (len + 1))) == NULL) + return (NULL); + str[len] = '\0'; + is_negative = 0; + u_nbr = nbr; + if (nbr < 0) + { + is_negative = 1; + str[0] = '-'; + u_nbr = -nbr; + } + len--; + while (len >= (is_negative ? 1 : 0)) + { + str[len] = u_nbr % 10 + '0'; + u_nbr /= 10; + len--; + } + return (str); +} -- cgit