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: lejulien <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2021/03/31 16:22:36 by lejulien #+# #+# */
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/* Updated: 2021/03/31 16:22:41 by lejulien ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include <stdlib.h>
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static char *ft_itoa2(int iszero, unsigned int nu, int i)
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{
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char *res;
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if (!(res = malloc((i + 1) * sizeof(char))))
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return (0);
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res[i] = '\0';
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while (nu > 0)
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{
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i--;
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res[i] = nu % 10 + '0';
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nu = nu / 10;
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}
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i--;
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if (iszero)
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{
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res[i] = nu + '0';
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i--;
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}
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if (i == 0)
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res[i] = '-';
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return (res);
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}
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char *ft_itoa(int n)
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{
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unsigned int nu;
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int i;
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int iszero;
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i = 0;
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if (n <= 0)
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{
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nu = -n;
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i++;
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}
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else
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nu = n;
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iszero = 0;
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while (n != 0)
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{
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n = n / 10;
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i++;
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}
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if (nu == 0)
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iszero++;
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return (ft_itoa2(iszero, nu, i));
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}
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