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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: bbosnak <bbosnak@student.42kocaeli.com.tr +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/12/26 18:36:59 by bbosnak #+# #+# */
/* Updated: 2022/12/26 18:37:00 by bbosnak ### ########.tr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_atoi(const char *str)
{
size_t i;
int res;
int pn;
pn = 1;
i = 0;
res = 0;
while (str[i] == 32 || (str[i] >= 9 && str[i] <= 13))
i++;
if (str[i] == '+' || str[i] == '-')
{
if (str[i] == '-')
pn = -1;
i++;
}
while (str[i] >= 48 && str[i] <= '9' && str[i])
{
res = (str[i] - 48) + (res * 10);
i++;
}
return (pn * res);
}
/* int main(void)
{
printf("%d\n", ft_atoi("-345"));
} */