63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_itoa.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jfleury <jfleury@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2018/11/13 11:06:12 by jfleury #+# #+# */
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/* Updated: 2018/11/13 18:48:02 by jfleury ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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#include <stdlib.h>
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static int ft_isneg(int n)
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{
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if (n >= 0)
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return (0);
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else
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return (1);
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}
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static int ft_nbrlen(int n)
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{
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int i;
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i = 0;
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while (n / 10 != 0)
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{
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i++;
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n = n / 10;
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}
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i++;
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return (i);
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}
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char *ft_itoa(int n)
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{
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char *str;
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int len;
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int nb;
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if (n == -2147483648)
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return (ft_strdup("-2147483648"));
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nb = n;
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len = ft_nbrlen(n) + ft_isneg(n);
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if (!(str = (char*)malloc(sizeof(char) * len + 1)))
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return (NULL);
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str[len] = '\0';
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if (n < 0)
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n = -n;
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while (len > ft_isneg(nb))
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{
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len--;
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str[len] = (n % 10) + 48;
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n = n / 10;
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}
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if (ft_isneg(nb) == 1)
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str[0] = '-';
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return (str);
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}
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