41 lines
1.3 KiB
C
41 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: lfirmin <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/05/21 10:09:46 by lfirmin #+# #+# */
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/* Updated: 2024/06/03 21:02:02 by lfirmin ### ########.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 *str)
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{
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int i;
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int s;
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int m;
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i = 0;
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s = 0;
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m = 0;
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while ((str[i] <= 13 && str[i] >= 9) || str[i] == 32)
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i++;
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while (str[i] == '-' || str[i] == '+')
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{
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s++;
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if (s >= 2)
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return (0);
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if (str[i] == '-')
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m++;
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i++;
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}
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s = 0;
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while (str[i] >= 48 && str[i] <= 57)
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s = s * 10 + (str[i++] - 48);
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if (m % 2 == 1)
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s = s * -1;
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return (s);
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}
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