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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: twakrim <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2018/10/15 14:30:25 by twakrim #+# #+# */
/* Updated: 2018/10/18 08:55:51 by twakrim ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_atoi(const char *nptr)
{
int i;
int sign;
int result;
i = 0;
result = 0;
sign = 1;
while ((nptr[i] >= 9 && nptr[i] <= 13) || nptr[i] == ' ')
i++;
if (nptr[i] == '-')
sign = -1;
if (nptr[i] == '-' || nptr[i] == '+')
i++;
while (nptr[i] <= '9' && nptr[i] >= '0')
{
result = result * 10 + nptr[i] - '0';
i++;
}
return (result * sign);
}