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: tchivert <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2019/04/07 16:58:58 by tchivert #+# #+# */
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/* Updated: 2019/09/04 05:13:27 by tchivert ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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static int ft_nblen(unsigned int n)
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{
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unsigned int i;
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i = 0;
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while (n >= 10)
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{
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n /= 10;
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i++;
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}
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return (i + 1);
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}
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char *ft_itoa(int n)
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{
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char *dest;
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unsigned int len;
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unsigned int nb;
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unsigned int i;
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nb = (n < 0 ? -n : n);
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len = ft_nblen(nb);
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i = 0;
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if (!(dest = (char *)malloc(sizeof(char) * len + 1 + (n < 0 ? 1 : 0))))
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return (NULL);
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if (n < 0)
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{
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dest[i] = '-';
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len++;
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}
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i = len - 1;
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while (nb >= 10)
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{
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dest[i] = nb % 10 + 48;
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nb /= 10;
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i--;
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}
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dest[i] = nb % 10 + 48;
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dest[len] = '\0';
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return (dest);
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}
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