314314

#include <stdio.h>

#include <stdio.h>
#include <unistd.h>

int         ft_putchar(char c)
{
    write(1, &c, 1);
    return (0);
}

int ft_check_base(char *base)
{
    unsigned int len;
    char all_chars[256];
    int i;

    len = 0;
    i = 0;
    while (i < 256)
        all_chars[i++] = 0;
    while (*base++)
    {
        len++;
        if (*(base - 1) == '+' || *(base - 1) == '-')
            return (0);
        all_chars[*(base - 1)]++;
        if (all_chars[*(base - 1)] > 1)
            return (0);
    }
    if (len <= 1)
        return (0);
    return (len);
}

int ft_check_str(char *str, char *base, int *len)
{
    int was_in;
    char *base_begin;

    base_begin = base;
    while (str[*len])
    {
        if (str[*len] == '-' || str[*len] == '+')
        {
            (*len)++;
            continue;
        }
        base = base_begin;
        was_in = 0;
        while (*base)
        {
            if (*base == str[*len])
                was_in = 1;
            base++;
        }
        if (!was_in)
            return (0);
        (*len)++;
    }
    return (1);
}

int ft_pow(int a, int b)
{
    int res;
    int i;

    i = 0;
    res = 1;
    if (a == 0)
    {
        return (0);
    }
    while (i < b)
    {
        res *= a;
        i++;
    }
    return (res);
}

int ft_get_pos(char c, char *base)
{
    int i = 0;
    while (base[i] && c != base[i])
    {
        i++;
    }
    return (i);
}

int ft_atoi_base(char *str, char *base)
{
    printf("@");
    int res;
    int sign;
    int len;
    int radix;
    int i;

    len = 0;
    res = 0;
    sign = 1;
    printf("@");
    radix = ft_check_base(base);
    printf("#");
    i = 0;
    if (radix == 0 || ft_check_str(str, base, &len) == 0)
        return (0);
    if (*str == '-')
        sign = -1;
    if (*str == '-' || *str == '+')
        str++;
    printf("*");
    while (str[i++] != '\0' && str[i - 1] != '+' && str[i - 1] != '-');
    while (*str != '\0' && *str != '+' && *str != '-')
    {
        res += ft_pow(radix, i) * ft_get_pos(*str++, *base);
        i--;
    }



    return (res);
}

int main()
{

    printf("%d", ft_atoi_base("12", "0123456789"));
    return 0;
}