Generate all combinations of the option strings

#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main(int c, const char **v)
{
    basic_string<const char *> options(v);
    auto N(options.length());
    for (auto n = 1u; n < N; ++n) {
        vector<char> pick(N);
        fill_n(pick.rbegin(), n, 1);
        do for (auto j=1u; j<N; ++j)
            if (pick[j])
                cout << options[j]<<' ';
        while (cout<<'\n', next_permutation(begin(pick)+1, end(pick)));
    }
}