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ft_itoa.c
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ft_itoa.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_itoa.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: loredana <loredana@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/03/07 11:58:14 by llo-surd #+# #+# */
/* Updated: 2022/03/30 15:12:17 by loredana ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static unsigned int ft_numsize(int n)
{
unsigned int len;
if (n == 0)
return (1);
len = 0;
if (n < 0)
len += 1;
while (n != 0)
{
n /= 10;
len++;
}
return (len);
}
char *ft_itoa(int n)
{
char *str;
unsigned int num;
unsigned int len;
len = ft_numsize(n);
str = (char *)malloc(sizeof(char) * (len + 1));
if (str == NULL)
return (NULL);
if (n < 0)
{
str[0] = '-';
num = -n;
}
else
num = n;
if (num == 0)
str[0] = '0';
str[len] = '\0';
while (num != 0)
{
str[len - 1] = (num % 10) + '0';
num = num / 10;
len--;
}
return (str);
}