ЕБАЛ В РОТ ГРУЗИНА

#include <stdio.h>
#include <stdbool.h>

int power(int num, int step)
{
    int ans = 1;
    if (step != 0)
        while (step > 0)
        {
            ans *= num;
            step--;
        }
    else
        return 1;
}

int fromNto10(int num, int base) // N < 10
{
    int ans = 0;
    int i = 0;
    while (num > 0)
    {
        ans += (num % 10) * power(base,i);
        i++;
        num /= 10;
    }
    return ans;
}



int main()
{
    int base, tmp = 0, k = 0;
    char num[11];
    scanf("%d", &base);
    scanf("%s", &num);

    for (int i = 0; i < 6 && num[i] != '\0'; i++)
    {
        k++;
    }
    //printf("%d\n", k);
    for (int i = 0; i < k; i++)
        tmp += (num[i] - '0') * power(10, k-i-1);
    bool flag = true;
    for (int i = 0 ; i < k; i ++)
    {
        if (num[i] - '0' > base && flag)
        {
            flag = false;
            break;
        }
    }
    if (!flag && (base != 2 || base != 8 || base != 10))
        printf("Number is Wrong.");
    else if (base == 10)
    {
        printf("%d %d\n", base, tmp);
        printf("%x", tmp);
    }
    else if (base == 2 || base == 8)
    {
        printf("%d %d\n", base, tmp);
        printf("%x", fromNto10(tmp, base));
    }
    else
        printf("Base is wrong.");
    //printf("%d", tmp);
    return 0;
}