59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
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/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_itoa.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: adjoly <adjoly@student.42angouleme.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/11/05 16:26:26 by adjoly #+# #+# */
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/* Updated: 2024/02/04 14:45:39 by adjoly ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../libft.h"
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static int ft_count_digit(int n)
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{
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int i;
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i = 0;
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if (n < 0)
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i++;
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if (n == 0)
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return (1);
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while (n)
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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);
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}
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char *ft_itoa(int n)
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{
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char *result;
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int i;
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i = ft_count_digit(n);
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if (n == 0)
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return (ft_strdup("0"));
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if (n == -2147483648)
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return (ft_strdup("-2147483648"));
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result = malloc(sizeof(char) * (i + 1));
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if (result == NULL)
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return (NULL);
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result[i--] = '\0';
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if (n < 0)
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{
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result[0] = '-';
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n = -n;
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}
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while (n)
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{
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result[i] = n % 10 + '0';
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n /= 10;
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i--;
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}
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return (result);
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}
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