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