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ft_itoa.c
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ft_itoa.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_itoa.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: alouzizi <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/14 11:36:36 by alouzizi #+# #+# */
/* Updated: 2021/11/15 18:04:14 by alouzizi ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static int len(long nb)
{
int len;
len = 0;
if (nb == 0)
len = 1;
while (nb < 0)
{
nb = nb * -1;
len++;
}
while (nb > 0)
{
nb = nb / 10;
len++;
}
return (len);
}
char *ft_itoa(int n)
{
char *s;
int i;
if (n == -2147483648)
return (ft_strdup("-2147483648"));
i = len(n);
s = (char *)malloc(sizeof(char) * (i + 1));
if (!s)
return (NULL);
s[i--] = '\0';
if (n == 0)
s[0] = 48;
if (n < 0)
{
s[0] = '-';
n = n * -1;
}
while (n > 0)
{
s[i] = (n % 10) + '0';
n = n / 10;
i--;
}
return (s);
}