You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
1.7 KiB
75 lines
1.7 KiB
/* ************************************************************************** */
|
|
/* */
|
|
/* ::: :::::::: */
|
|
/* ft_itoa.c :+: :+: :+: */
|
|
/* +:+ +:+ +:+ */
|
|
/* By: narnaud <narnaud@student.42.fr> +#+ +:+ +#+ */
|
|
/* +#+#+#+#+#+ +#+ */
|
|
/* Created: 2021/10/20 15:50:47 by narnaud #+# #+# */
|
|
/* Updated: 2021/11/15 12:10:47 by narnaud ### ########.fr */
|
|
/* */
|
|
/* ************************************************************************** */
|
|
|
|
#include "libft.h"
|
|
|
|
static void ft_strrev(char **str, unsigned int neg)
|
|
{
|
|
char ch;
|
|
size_t size;
|
|
size_t i;
|
|
|
|
size = ft_strlen(*str);
|
|
if (neg)
|
|
(*str)[size++] = '-';
|
|
i = 0;
|
|
while (i < size / 2)
|
|
{
|
|
ch = (*str)[i];
|
|
(*str)[i] = (*str)[size - i - 1];
|
|
(*str)[size - i - 1] = ch;
|
|
i++;
|
|
}
|
|
}
|
|
|
|
static size_t get_nbrlength(int nbr)
|
|
{
|
|
size_t i;
|
|
|
|
i = 0;
|
|
if (nbr == 0)
|
|
return (1);
|
|
else if (nbr < 0)
|
|
i++;
|
|
while (nbr && ++i)
|
|
nbr = nbr / 10;
|
|
return (i);
|
|
}
|
|
|
|
char *ft_itoa(int n)
|
|
{
|
|
char *ret;
|
|
unsigned int i;
|
|
unsigned int neg;
|
|
|
|
if (n == -2147483648)
|
|
return (ft_strdup("-2147483648"));
|
|
if (n == 0)
|
|
return (ft_strdup("0"));
|
|
i = 0;
|
|
neg = 0;
|
|
ret = ft_calloc(get_nbrlength(n) + 1, sizeof(char));
|
|
if (!ret)
|
|
return (NULL);
|
|
if (n < 0)
|
|
{
|
|
n = -n;
|
|
neg = 1;
|
|
}
|
|
while (n)
|
|
{
|
|
ret[i++] = (n % 10) + '0';
|
|
n = n / 10;
|
|
}
|
|
ft_strrev(&ret, neg);
|
|
return (ret);
|
|
}
|
|
|