56 lines
1.4 KiB
C
56 lines
1.4 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: cchauvet <cchauvet@student.42angoulem +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/09/29 13:49:45 by cchauvet #+# #+# */
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/* Updated: 2022/10/10 14:41:18 by cchauvet ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "printf.h"
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static int ft_nb_digit(int n)
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{
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int out;
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out = 0;
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while (n)
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{
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n /= 10;
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out++;
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}
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return (out);
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}
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char *ft_itoa(int n)
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{
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char *out;
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unsigned int nb[2];
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if (!n)
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return (ft_strdup("0"));
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nb[0] = ft_nb_digit(n);
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if (n < 0)
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{
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nb[1] = -n;
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nb[0]++;
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}
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else
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nb[1] = n;
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out = malloc(sizeof(char) * (nb[0] + 1));
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if (out == NULL)
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return (NULL);
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out[nb[0]--] = 0;
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if (n < 0)
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out[0] = '-';
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while (nb[1])
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{
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out[nb[0]--] = nb[1] % 10 + 48;
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nb[1] /= 10;
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}
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return (out);
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}
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