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cub3d/libft/str/ft_itoa.c

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2024-09-10 16:27:06 +02:00
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_itoa.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: madumerg <madumerg@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/11/06 11:14:32 by madumerg #+# #+# */
/* Updated: 2023/11/08 10:22:00 by madumerg ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static int ft_len(int n)
{
int cpt;
unsigned int nb;
cpt = 0;
if (n < 0)
{
cpt++;
nb = -n;
}
else
nb = n;
while (nb >= 10)
{
nb /= 10;
cpt++;
}
cpt++;
return (cpt);
}
char *ft_itoa(int n)
{
char *str;
int cpt;
long long int nb;
int i;
i = 0;
nb = n;
cpt = ft_len(n);
str = ft_calloc((cpt + 1), sizeof(char));
if (!str)
return (NULL);
if (n < 0)
{
str[0] = '-';
i = 1;
nb *= -1;
}
cpt--;
while (cpt >= i)
{
str[cpt] = (nb % 10) + '0';
nb /= 10;
cpt--;
}
return (str);
}