#include<cstdlib>
#include<iostream>
#include<iterator>

const unsigned int n=3;
const unsigned int k=5;

int main()
{
    unsigned int A[n] = {0};

    while(true)
    {
        //Do something
        std::copy(std::rbegin(A), std::rend(A), std::ostream_iterator<int>(std::cout));
        std::cout << "\n";

        unsigned int i=0;
        while(i<n && A[i]==k-1)
            A[i++]=0;

        if(i>=n)
            return EXIT_SUCCESS;

        A[i]++;
    }
}