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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: amahla <amahla@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/05/02 12:27:11 by amahla #+# #+# */
/* Updated: 2022/05/05 14:45:30 by amahla ### ########.fr */
/* */
/* ************************************************************************** */
#include"libft.h"
int ft_atoi(const char *nptr)
{
size_t i;
int sign;
int nb;
i = 0;
sign = 1;
nb = 0;
if (!nptr)
return (0);
while ((nptr[i] >= 9 && nptr[i] <= 13) || nptr[i] == ' ')
i++;
if (nptr[i] == '+' || nptr[i] == '-')
{
if (nptr[i] == '-')
sign *= -1;
i++;
}
while (nptr[i] >= '0' && nptr[i] <= '9')
{
nb = nb * 10 + nptr[i] - 48;
i++;
}
return (nb * sign);
}