40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_atoi.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: cchauvet <cchauvet@student.42angoulem +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/09/27 16:14:34 by cchauvet #+# #+# */
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/* Updated: 2022/09/28 18:15:04 by cchauvet ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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int ft_atoi(const char *nptr)
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{
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char *str;
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int out;
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int sign;
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str = (char *) nptr;
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out = 0;
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while (*str == ' ' || *str == '\f' || *str == '\v' || *str == '\t'
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|| *str == '\r' || *str == '\n')
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str++;
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sign = 1;
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if (*str == '-' || *str == '+')
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{
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if (*str == '-')
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sign = -1;
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str++;
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}
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while (ft_isdigit(*str))
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{
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out = 10 * out + *str - 48;
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str++;
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}
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return (out * sign);
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}
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