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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: rchallie <rchallie@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/10/07 15:54:34 by rchallie #+# #+# */
/* Updated: 2019/10/16 17:50:37 by rchallie ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_atoi(const char *str)
{
long i;
long nbr;
int isneg;
i = 0;
nbr = 0;
isneg = 0;
while (str[i] != '\0' && (str[i] == 32 || str[i] == '\t' || str[i] == '\n'
|| str[i] == '\r' || str[i] == '\v' || str[i] == '\f'))
i++;
if (str[i] != '\0' && str[i] == '-')
{
isneg = 1;
i++;
}
else if (str[i] == '+')
i++;
while (str[i] != '\0' && ft_isdigit(str[i]))
nbr = (nbr * 10) + (str[i++] - '0');
if (isneg == 1)
return (-nbr);
return (nbr);
}