Project Euler

Hey /prog/, I know I'm a little late to the party, but I was wondering how many problems you've solved thus far.
Other discussion regarding Project Euler is also welcome!

>>41
I understand C++ well, but BBcode will never make sense to me.
Heres my last one

#include <iostream>
#include <gmp.h>

using namespace std;
int sumdigs(mpz_t * num);
int main()
{
    mpz_t result;
    mpz_init(result);
    int best = 0;
    for(int a = 1; a < 101;a++)
    {
        for(int b = 1; b <101;b++)
        {
            mpz_ui_pow_ui(result,a,b);
           int temp = sumdigs(&result);
            if( temp > best)
            {
                best = temp;
            }


        }
    }
    cout<<best;
    return 0;
}
int sumdigs(mpz_t * num)
{

    char holder[202];
    mpz_get_str(holder,10,*num);
    int length = 0;
    int sum = 0;
    while(1)
    {
        if(holder[length] == 0)
        {
            break;
        }
        length++;
    }
    for(int i = 0; i < length;i++)
    {
        sum += holder[i] - 48;
    }
    return sum;
}