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ft_atoi.c
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ft_atoi.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: edegraev <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/11/06 15:24:34 by edegraev #+# #+# */
/* Updated: 2023/11/16 09:16:21 by edegraev ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
int ft_atoi(const char *str)
{
int result;
int i;
int c;
result = 0;
i = 0;
c = 1;
while ((str[i] >= 9 && str[i] <= 13) || str[i] == 32)
i++;
if (str[i] == '-')
{
c = -1;
i++;
}
else if (str[i] == '+')
i++;
while (str[i] >= 48 && str[i] <= 57)
{
result = result * 10 + (str[i] - 48);
i++;
}
return (result * c);
}
// #include <stdio.h>
// int main(void)
// {
// printf("%d\n", ft_atoi(" --1")); // 0
// printf("%d\n", ft_atoi(" +42paris")); // 42
// printf("%d\n", ft_atoi(" a1")); // 0
// printf("%d\n", ft_atoi(" 1a")); // 1
// }