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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: mrychkov <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2017/04/29 17:20:20 by mrychkov #+# #+# */
/* Updated: 2018/02/16 19:41:57 by mrychkov ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_atoi(const char *str)
{
size_t i;
int n;
int a;
i = 0;
n = 1;
a = 0;
while (ft_isspace(str[i]))
i++;
if (str[i] == 45 || str[i] == 43)
{
n = (str[i] == 45 ? -1 : 1);
i++;
}
while (ft_isdigit(str[i]))
a = a * 10 + str[i++] - 48;
return (a * n);
}