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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tchevrie <tchevrie@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/09/11 00:44:51 by tchevrie #+# #+# */
/* Updated: 2022/10/05 04:32:47 by tchevrie ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_atoi(const char *str)
{
int nbr;
int sign;
size_t i;
nbr = 0;
sign = 1;
i = 0;
while (str[i] == ' ' || ('\t' <= str[i] && str[i] <= '\r'))
i++;
if (str[i] == '+')
i++;
else if (str[i] == '-')
{
sign *= -1;
i++;
}
while ('0' <= str[i] && str[i] <= '9')
{
nbr = nbr * 10 + str[i] - '0';
i++;
}
return (nbr * sign);
}