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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: bsiguret <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2017/07/08 20:13:06 by bsiguret #+# #+# */
/* Updated: 2017/07/09 09:29:48 by bsiguret ### ########.fr */
/* */
/* ************************************************************************** */
int ft_atoi(char *str)
{
int i;
int negative;
int result;
i = 0;
negative = 0;
result = 0;
while ((str[i] == ' ') || (str[i] == '\t') || (str[i] == '\n')
|| (str[i] == '\v') || (str[i] == '\f') || (str[i] == '\r'))
i++;
if (str[i] == 45)
negative = 1;
if ((str[i] == 45) || (str[i] == 43))
i++;
while (str[i] >= 48 && str[i] <= 57)
{
result = result * 10 + (str[i] - 48);
i++;
}
if (negative == 1)
return (-result);
else
return (result);
}