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lejulien
2026-01-09 15:45:59 +01:00
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74
philo_two/srcs/utils/ft_atoi.c Executable file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lejulien <lejulien@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/03/05 13:06:04 by lejulien #+# #+# */
/* Updated: 2021/04/15 10:34:00 by lejulien ### ########.fr */
/* */
/* ************************************************************************** */
static int
ft_isspace(char c)
{
if ((c == '\f') || (c == '\t') || (c == '\n') || (c == '\r')
|| (c == '\v') || (c == ' '))
{
return (1);
}
return (0);
}
int
ft_atoi(const char *str)
{
int nbr;
int sign;
int index;
nbr = 0;
sign = 1;
index = 0;
while ((ft_isspace(str[index]) == 1) && str[index] != '\0')
index++;
if ((str[index] == '+') || (str[index] == '-'))
{
if (str[index] == '-')
sign = -1;
index++;
}
while ((str[index] >= '0') && (str[index] <= '9'))
{
nbr = (nbr * 10) + (str[index] - '0');
index++;
}
return (sign * nbr);
}
unsigned long int
ft_atouli(const char *str)
{
unsigned long int nbr;
int sign;
unsigned long int index;
nbr = 0;
sign = 1;
index = 0;
while ((ft_isspace(str[index]) == 1) && str[index] != '\0')
index++;
if ((str[index] == '+') || (str[index] == '-'))
{
if (str[index] == '-')
sign = -1;
index++;
}
while ((str[index] >= '0') && (str[index] <= '9'))
{
nbr = (nbr * 10) + (str[index] - '0');
index++;
}
return (sign * nbr);
}