rt/libft/ft_atoi.c

40 lines
1.2 KiB
C

/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: scebula <scebula@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2015/11/26 09:47:14 by scebula #+# #+# */
/* Updated: 2015/12/04 00:21:47 by scebula ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_atoi(const char *str)
{
int n;
int sign;
sign = 1;
n = 0;
while (ft_isspace(*str))
str++;
if (*str == '-')
{
sign = -1;
str++;
}
else if (*str == '+')
{
str++;
}
while (*str && ft_isdigit(*str))
{
n = n * 10 + (*str - '0');
str++;
}
return (n * sign);
}