38 lines
1.2 KiB
C
38 lines
1.2 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: gbaconni <marvin@42lausanne.ch> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2021/08/13 12:46:22 by gbaconni #+# #+# */
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/* Updated: 2021/08/16 13:49:34 by gbaconni ### ########.fr */
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/* */
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/* ************************************************************************** */
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int ft_atoi(char *str)
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{
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int nb;
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int s;
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int i;
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nb = 0;
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s = 1;
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i = 0;
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while (str[i] != '\0' && (str[i] == ' ' || (str[i] >= '\t' && str[i] <= '\r')))
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i++;
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while (str[i] != '\0')
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{
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if (str[i] == '+')
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s += 0;
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else if (str[i] == '-')
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s *= -1;
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else if (str[i] >= '0' && str[i] <= '9')
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nb = nb * 10 + str[i] - '0';
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else
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break ;
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i++;
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}
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return (nb * s);
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}
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