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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ssandova <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/09/23 15:09:54 by ssandova #+# #+# */
/* Updated: 2023/10/07 13:04:48 by ssandova ### ########.fr */
/* */
/* ************************************************************************** */
/*The atoi() function converts the initial portion of the string pointed to by
str to int representation.*/
#include "libft.h"
int ft_atoi(const char *str)
{
int i;
int res;
int sign;
i = 0;
res = 0;
sign = 1;
while ((str[i] >= 9 && str[i] <= 13) || str[i] == 32)
i++;
if (str[i] == 43 || str[i] == 45)
{
if (str[i] == 45)
sign = -1;
i++;
}
while (ft_isdigit(str[i]) && str[i] != '\0')
{
res = res * 10 + str[i] - '0';
i++;
}
return (res * sign);
}